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https://issues.apache.org/jira/browse/YARN-7135?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16171994#comment-16171994
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weiyuan commented on YARN-7135:
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[~templedf], thanks for your suggestion, I updated the patch again.
> Clean up lock-try order in common scheduler code
> ------------------------------------------------
>
> Key: YARN-7135
> URL: https://issues.apache.org/jira/browse/YARN-7135
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: scheduler
> Affects Versions: 3.0.0-alpha4
> Reporter: Daniel Templeton
> Assignee: weiyuan
> Labels: newbie
> Attachments: YARN-7135.001.patch, YARN-7135.002.patch
>
>
> There are many places that follow the pattern:{code}try {
> lock.lock();
> ...
> } finally {
> lock.unlock();
> }{code}
> There are a couple of reasons that's a bad idea. The correct pattern
> is:{code}lock.lock();
> try {
> ...
> } finally {
> lock.unlock();
> }{code}
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