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Posted to mapreduce-issues@hadoop.apache.org by "Eli Collins (JIRA)" <ji...@apache.org> on 2011/06/30 19:48:28 UTC
[jira] [Commented] (MAPREDUCE-2243) Close all the file streams
propely in a finally block to avoid their leakage.
[ https://issues.apache.org/jira/browse/MAPREDUCE-2243?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13057955#comment-13057955 ]
Eli Collins commented on MAPREDUCE-2243:
----------------------------------------
fyi HADOOP-7428 is a case where the RTE is relevant.
> Close all the file streams propely in a finally block to avoid their leakage.
> -----------------------------------------------------------------------------
>
> Key: MAPREDUCE-2243
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2243
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: jobtracker, tasktracker
> Affects Versions: 0.20.1, 0.22.0, 0.23.0
> Environment: NA
> Reporter: Bhallamudi Venkata Siva Kamesh
> Assignee: Devaraj K
> Priority: Minor
> Attachments: MAPREDUCE-2243.patch
>
> Original Estimate: 72h
> Remaining Estimate: 72h
>
> In the following classes streams should be closed in finally block to avoid their leakage in the exceptional cases.
> CompletedJobStatusStore.java
> ------------------------------------------
> dataOut.writeInt(events.length);
> for (TaskCompletionEvent event : events) {
> event.write(dataOut);
> }
> dataOut.close() ;
> EventWriter.java
> ----------------------
> encoder.flush();
> out.close();
> MapTask.java
> -------------------
> splitMetaInfo.write(out);
> out.close();
> TaskLog
> ------------
> 1) str = fis.readLine();
> fis.close();
> 2) dos.writeBytes(Long.toString(new File(logLocation, LogName.SYSLOG
> .toString()).length() - prevLogLength) + "\n");
> dos.close();
> TotalOrderPartitioner.java
> -----------------------------------
> while (reader.next(key, value)) {
> parts.add(key);
> key = ReflectionUtils.newInstance(keyClass, conf);
> }
> reader.close();
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