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https://issues.apache.org/jira/browse/MAPREDUCE-6542?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15335251#comment-15335251
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Hudson commented on MAPREDUCE-6542:
-----------------------------------
SUCCESS: Integrated in Hadoop-trunk-Commit #9975 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/9975/])
MAPREDUCE-6542. HistoryViewer uses SimpleDateFormat, but (aajisaka: rev
51d497fa93d35dec7503eb30b8e3a1e8f2d39b45)
*
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/StringUtils.java
*
hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/util/TestStringUtils.java
*
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/jobhistory/HumanReadableHistoryViewerPrinter.java
> HistoryViewer uses SimpleDateFormat, but SimpleDateFormat is not threadsafe
> ---------------------------------------------------------------------------
>
> Key: MAPREDUCE-6542
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-6542
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: jobhistoryserver
> Affects Versions: 2.2.0, 2.7.1
> Environment: CentOS6.5 Hadoop
> Reporter: zhangyubiao
> Assignee: zhangyubiao
> Fix For: 2.9.0
>
> Attachments: MAPREDUCE-6542-v10.patch, MAPREDUCE-6542-v11.patch,
> MAPREDUCE-6542-v12.patch, MAPREDUCE-6542-v13.patch, MAPREDUCE-6542-v14.patch,
> MAPREDUCE-6542-v15.patch, MAPREDUCE-6542-v16.patch, MAPREDUCE-6542-v2.patch,
> MAPREDUCE-6542-v3.patch, MAPREDUCE-6542-v4.patch, MAPREDUCE-6542-v5.patch,
> MAPREDUCE-6542-v6.patch, MAPREDUCE-6542-v7.patch, MAPREDUCE-6542-v8.patch,
> MAPREDUCE-6542-v9.patch, MAPREDUCE-6542.patch
>
>
> I use SimpleDateFormat to Parse the JobHistory File before
> {code}
> private static final SimpleDateFormat dateFormat =
> new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
> public static String getJobDetail(JobInfo job) {
> StringBuffer jobDetails = new StringBuffer("");
> SummarizedJob ts = new SummarizedJob(job);
> jobDetails.append(job.getJobId().toString().trim()).append("\t");
> jobDetails.append(job.getUsername()).append("\t");
> jobDetails.append(job.getJobname().replaceAll("\\n",
> "")).append("\t");
> jobDetails.append(job.getJobQueueName()).append("\t");
> jobDetails.append(job.getPriority()).append("\t");
> jobDetails.append(job.getJobConfPath()).append("\t");
> jobDetails.append(job.getUberized()).append("\t");
>
> jobDetails.append(dateFormat.format(job.getSubmitTime())).append("\t");
>
> jobDetails.append(dateFormat.format(job.getLaunchTime())).append("\t");
>
> jobDetails.append(dateFormat.format(job.getFinishTime())).append("\t");
> return jobDetails.toString();
> }
> {code}
> But I find I query the SubmitTime and LaunchTime in hive and compare
> JobHistory File time , I find that the submitTime and launchTime was wrong.
> Finally,I change to use the FastDateFormat to parse the time format and the
> time become right
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