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https://issues.apache.org/jira/browse/YARN-7200?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17242946#comment-17242946
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Andras Gyori commented on YARN-7200:
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[~akshink] I get this logic now. However, you are making an assumption here,
that the #serviceStop method is never called. What if it do get called in the
future? I would make an extra safety net there, perhaps make the writer null,
after we close it (that way you make sure that no exception could be thrown,
even if #tearDown called multiple times).
> SLS generates a realtimetrack.json file but that file is missing the closing
> ']'
> --------------------------------------------------------------------------------
>
> Key: YARN-7200
> URL: https://issues.apache.org/jira/browse/YARN-7200
> Project: Hadoop YARN
> Issue Type: Bug
> Components: scheduler-load-simulator
> Reporter: Grant Sohn
> Assignee: Agshin Kazimli
> Priority: Minor
> Labels: newbie, newbie++
> Attachments: YARN-7200-branch-trunk.patch, YARN-7200.002.patch,
> snemeth-testing-20201113.zip
>
>
> File
> hadoop-tools/hadoop-sls/src/main/java/org/apache/hadoop/yarn/sls/scheduler/SchedulerMetrics.java
> shows:
> {noformat}
> void tearDown() throws Exception {
> if (metricsLogBW != null) {
> metricsLogBW.write("]");
> metricsLogBW.close();
> }
> ....
> {noformat}
> So the exit logic is flawed.
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