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MAPREDUCE-5895. Close streams properly to avoid leakage in TaskLog. Contributed by Kousuke Saruta.

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git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1598209 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Devarajulu K 2014-05-29 07:05:26 +00:00
parent 342da5b4d3
commit 61c59c0704
2 changed files with 17 additions and 10 deletions
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3
hadoop-mapreduce-project/CHANGES.txt
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@ -244,6 +244,9 @@ Release 2.5.0 - UNRELEASED
MAPREDUCE-5862. Line records longer than 2x split size aren't handled
correctly (bc Wong via jlowe)
MAPREDUCE-5895. Close streams properly to avoid leakage in TaskLog.
(Kousuke Saruta via devaraj)
Release 2.4.1 - UNRELEASED
INCOMPATIBLE CHANGES

24
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/TaskLog.java
View File

@ -199,16 +199,18 @@ void writeToIndexFile(String logLocation,
// file first and then rename.
File tmpIndexFile = getTmpIndexFile(currentTaskid, isCleanup);
BufferedOutputStream bos =
new BufferedOutputStream(
SecureIOUtils.createForWrite(tmpIndexFile, 0644));
DataOutputStream dos = new DataOutputStream(bos);
//the format of the index file is
//LOG_DIR: <the dir where the task logs are really stored>
//STDOUT: <start-offset in the stdout file> <length>
//STDERR: <start-offset in the stderr file> <length>
//SYSLOG: <start-offset in the syslog file> <length>
BufferedOutputStream bos = null;
DataOutputStream dos = null;
try{
bos = new BufferedOutputStream(
SecureIOUtils.createForWrite(tmpIndexFile, 0644));
dos = new DataOutputStream(bos);
//the format of the index file is
//LOG_DIR: <the dir where the task logs are really stored>
//STDOUT: <start-offset in the stdout file> <length>
//STDERR: <start-offset in the stderr file> <length>
//SYSLOG: <start-offset in the syslog file> <length>
dos.writeBytes(LogFileDetail.LOCATION + logLocation + "\n"
+ LogName.STDOUT.toString() + ":");
dos.writeBytes(Long.toString(prevOutLength) + " ");
@ -225,8 +227,10 @@ void writeToIndexFile(String logLocation,
+ "\n");
dos.close();
dos = null;
bos.close();
bos = null;
} finally {
IOUtils.cleanup(LOG, dos);
IOUtils.cleanup(LOG, dos, bos);
}
File indexFile = getIndexFile(currentTaskid, isCleanup);