added sample
Shane Kumpf
9 years ago
parent
d773c97564
commit
ae8a7ff587
@ -0,0 +1,71 @@
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/*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.github.sakserv.sequencefile;
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import org.apache.hadoop.conf.Configuration;
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import org.apache.hadoop.fs.FileSystem;
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import org.apache.hadoop.fs.Path;
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import org.apache.hadoop.io.IntWritable;
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import org.apache.hadoop.io.SequenceFile;
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import org.apache.hadoop.io.Text;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import java.io.IOException;
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public class Main {
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// Logger
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private static final Logger LOG = LoggerFactory.getLogger(Main.class);
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public static void main(String[] args) {
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Configuration conf = new Configuration();
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try {
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FileSystem fs = FileSystem.get(conf);
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Path seqFileDir = new Path("/tmp/seq_file_test");
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fs.mkdirs(seqFileDir);
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Path seqFilePath = new Path(seqFileDir + "/file.seq");
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SequenceFile.Writer writer = SequenceFile.createWriter(conf,
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SequenceFile.Writer.file(seqFilePath), SequenceFile.Writer.keyClass(Text.class),
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SequenceFile.Writer.valueClass(IntWritable.class));
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writer.append(new Text("key1"), new IntWritable(1));
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writer.append(new Text("key2"), new IntWritable(2));
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writer.close();
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SequenceFile.Reader reader = new SequenceFile.Reader(conf,
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SequenceFile.Reader.file(seqFilePath));
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Text key = new Text();
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IntWritable val = new IntWritable();
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while (reader.next(key, val)) {
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System.out.println("SEQFILE KEY: " + key + "\t" + val);
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}
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fs.mkdirs(new Path("/tmp/seq_file_test"));
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reader.close();
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} catch(IOException e) {
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LOG.error("ERROR: Could not load hadoop configuration");
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e.printStackTrace();
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}
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}
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}
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@ -0,0 +1,156 @@
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<!--Wed Mar 4 22:48:23 2015-->
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<configuration>
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<property>
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<name>fs.defaultFS</name>
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<value>hdfs://sandbox.hortonworks.com:8020</value>
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<final>true</final>
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</property>
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<property>
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<name>fs.trash.interval</name>
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<value>360</value>
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</property>
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<property>
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<name>hadoop.http.authentication.simple.anonymous.allowed</name>
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<value>true</value>
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</property>
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<property>
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<name>hadoop.proxyuser.falcon.groups</name>
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<value>users</value>
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</property>
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<property>
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<name>hadoop.proxyuser.falcon.hosts</name>
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<value>*</value>
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</property>
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<property>
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<name>hadoop.proxyuser.hbase.groups</name>
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<value>users</value>
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</property>
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<property>
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<name>hadoop.proxyuser.hbase.hosts</name>
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<value>*</value>
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</property>
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<property>
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<name>hadoop.proxyuser.hcat.groups</name>
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<value>users</value>
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</property>
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<property>
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<name>hadoop.proxyuser.hcat.hosts</name>
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<value>sandbox.hortonworks.com</value>
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</property>
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<property>
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<name>hadoop.proxyuser.hive.groups</name>
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<value>users</value>
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</property>
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<property>
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<name>hadoop.proxyuser.hive.hosts</name>
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<value>sandbox.hortonworks.com</value>
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</property>
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<property>
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<name>hadoop.proxyuser.hue.groups</name>
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<value>*</value>
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</property>
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<property>
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<name>hadoop.proxyuser.hue.hosts</name>
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<value>*</value>
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</property>
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<property>
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<name>hadoop.proxyuser.oozie.groups</name>
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<value>*</value>
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</property>
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<property>
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<name>hadoop.proxyuser.oozie.hosts</name>
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<value>sandbox.hortonworks.com</value>
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</property>
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<property>
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<name>hadoop.proxyuser.root.groups</name>
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<value>*</value>
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</property>
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<property>
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<name>hadoop.proxyuser.root.hosts</name>
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<value>*</value>
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</property>
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<property>
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<name>hadoop.security.auth_to_local</name>
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<value>
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RULE:[2:$1@$0]([rn]m@.*)s/.*/yarn/
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RULE:[2:$1@$0](jhs@.*)s/.*/mapred/
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RULE:[2:$1@$0]([nd]n@.*)s/.*/hdfs/
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RULE:[2:$1@$0](hm@.*)s/.*/hbase/
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RULE:[2:$1@$0](rs@.*)s/.*/hbase/
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DEFAULT</value>
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</property>
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<property>
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<name>hadoop.security.authentication</name>
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<value>simple</value>
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</property>
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<property>
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<name>hadoop.security.authorization</name>
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<value>false</value>
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</property>
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<property>
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<name>io.compression.codecs</name>
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<value>org.apache.hadoop.io.compress.GzipCodec,org.apache.hadoop.io.compress.DefaultCodec,org.apache.hadoop.io.compress.SnappyCodec</value>
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</property>
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<property>
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<name>io.file.buffer.size</name>
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<value>131072</value>
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</property>
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<property>
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<name>io.serializations</name>
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<value>org.apache.hadoop.io.serializer.WritableSerialization</value>
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</property>
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<property>
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<name>ipc.client.connect.max.retries</name>
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<value>50</value>
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</property>
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<property>
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<name>ipc.client.connection.maxidletime</name>
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<value>30000</value>
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</property>
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<property>
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<name>ipc.client.idlethreshold</name>
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<value>8000</value>
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</property>
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<property>
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<name>ipc.server.tcpnodelay</name>
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<value>true</value>
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</property>
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<property>
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<name>mapreduce.jobtracker.webinterface.trusted</name>
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<value>false</value>
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</property>
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<property>
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<name>proxyuser_group</name>
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<value>users</value>
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</property>
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</configuration>
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@ -0,0 +1,265 @@
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<!--Wed Mar 4 22:48:43 2015-->
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<configuration>
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<property>
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<name>dfs.block.access.token.enable</name>
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<value>false</value>
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</property>
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<property>
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<name>dfs.block.size</name>
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<value>34217472</value>
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</property>
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<property>
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<name>dfs.blockreport.initialDelay</name>
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<value>120</value>
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</property>
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<property>
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<name>dfs.blocksize</name>
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<value>134217728</value>
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</property>
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<property>
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<name>dfs.client.read.shortcircuit</name>
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<value>true</value>
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</property>
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<property>
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<name>dfs.client.read.shortcircuit.streams.cache.size</name>
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<value>4096</value>
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</property>
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<property>
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<name>dfs.cluster.administrators</name>
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<value> hdfs</value>
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</property>
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<property>
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<name>dfs.datanode.address</name>
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<value>0.0.0.0:50010</value>
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</property>
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<property>
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<name>dfs.datanode.balance.bandwidthPerSec</name>
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<value>6250000</value>
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</property>
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<property>
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<name>dfs.datanode.data.dir</name>
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<value>/hadoop/hdfs/data</value>
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<final>true</final>
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</property>
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<property>
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<name>dfs.datanode.data.dir.perm</name>
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<value>750</value>
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</property>
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<property>
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<name>dfs.datanode.du.reserved</name>
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<value>1073741824</value>
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</property>
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<property>
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<name>dfs.datanode.failed.volumes.tolerated</name>
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<value>0</value>
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<final>true</final>
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</property>
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<property>
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<name>dfs.datanode.http.address</name>
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<value>0.0.0.0:50075</value>
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</property>
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<property>
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<name>dfs.datanode.https.address</name>
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<value>0.0.0.0:50475</value>
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</property>
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<property>
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<name>dfs.datanode.ipc.address</name>
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<value>0.0.0.0:8010</value>
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</property>
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<property>
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<name>dfs.datanode.max.transfer.threads</name>
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<value>1024</value>
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</property>
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<property>
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<name>dfs.datanode.max.xcievers</name>
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<value>1024</value>
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</property>
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<property>
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<name>dfs.domain.socket.path</name>
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<value>/var/lib/hadoop-hdfs/dn_socket</value>
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</property>
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<property>
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<name>dfs.heartbeat.interval</name>
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<value>3</value>
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</property>
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<property>
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<name>dfs.hosts.exclude</name>
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<value>/etc/hadoop/conf/dfs.exclude</value>
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</property>
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<property>
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<name>dfs.http.policy</name>
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<value>HTTP_ONLY</value>
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</property>
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<property>
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<name>dfs.https.port</name>
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<value>50470</value>
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</property>
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<property>
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<name>dfs.journalnode.edits.dir</name>
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<value>/hadoop/hdfs/journalnode</value>
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</property>
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<property>
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<name>dfs.journalnode.http-address</name>
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<value>0.0.0.0:8480</value>
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</property>
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<property>
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<name>dfs.namenode.accesstime.precision</name>
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<value>3600000</value>
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</property>
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<property>
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<name>dfs.namenode.avoid.read.stale.datanode</name>
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<value>true</value>
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</property>
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<property>
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<name>dfs.namenode.avoid.write.stale.datanode</name>
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<value>true</value>
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</property>
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<property>
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<name>dfs.namenode.checkpoint.dir</name>
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<value>/hadoop/hdfs/namesecondary</value>
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</property>
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<property>
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<name>dfs.namenode.checkpoint.edits.dir</name>
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<value>${dfs.namenode.checkpoint.dir}</value>
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</property>
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<property>
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<name>dfs.namenode.checkpoint.period</name>
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<value>21600</value>
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</property>
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<property>
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<name>dfs.namenode.checkpoint.txns</name>
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<value>1000000</value>
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</property>
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<property>
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<name>dfs.namenode.handler.count</name>
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<value>100</value>
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</property>
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<property>
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<name>dfs.namenode.http-address</name>
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<value>sandbox.hortonworks.com:50070</value>
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<final>true</final>
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</property>
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<property>
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<name>dfs.namenode.https-address</name>
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<value>sandbox.hortonworks.com:50470</value>
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</property>
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<property>
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<name>dfs.namenode.name.dir</name>
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<value>/hadoop/hdfs/namenode</value>
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<final>true</final>
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</property>
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<property>
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<name>dfs.namenode.name.dir.restore</name>
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<value>true</value>
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</property>
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<property>
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<name>dfs.namenode.safemode.threshold-pct</name>
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<value>1.0f</value>
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</property>
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<property>
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<name>dfs.namenode.secondary.http-address</name>
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<value>sandbox.hortonworks.com:50090</value>
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</property>
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<property>
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<name>dfs.namenode.stale.datanode.interval</name>
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<value>30000</value>
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</property>
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<property>
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<name>dfs.namenode.startup.delay.block.deletion.sec</name>
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<value>3600</value>
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</property>
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<property>
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<name>dfs.namenode.write.stale.datanode.ratio</name>
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<value>1.0f</value>
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</property>
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<property>
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<name>dfs.nfs.exports.allowed.hosts</name>
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<value>* rw</value>
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</property>
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<property>
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<name>dfs.nfs3.dump.dir</name>
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<value>/tmp/.hdfs-nfs</value>
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</property>
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<property>
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<name>dfs.permissions.enabled</name>
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<value>true</value>
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</property>
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<property>
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<name>dfs.permissions.superusergroup</name>
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<value>hdfs</value>
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</property>
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<property>
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<name>dfs.replication</name>
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<value>1</value>
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</property>
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<property>
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<name>dfs.replication.max</name>
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<value>50</value>
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</property>
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<property>
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<name>dfs.support.append</name>
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<value>true</value>
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<final>true</final>
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</property>
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<property>
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<name>dfs.webhdfs.enabled</name>
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<value>true</value>
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<final>true</final>
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</property>
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<property>
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<name>fs.permissions.umask-mode</name>
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<value>022</value>
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</property>
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</configuration>
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@ -1,4 +1,4 @@
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/*
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package com.github.sakserv.sequencefile;/*
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||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
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Reference in New Issue