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https://issues.apache.org/jira/browse/YARN-4219?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15118169#comment-15118169
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Jason Lowe commented on YARN-4219:
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+1, latest patch lgtm.
> New levelDB cache storage for timeline v1.5
> -------------------------------------------
>
> Key: YARN-4219
> URL: https://issues.apache.org/jira/browse/YARN-4219
> Project: Hadoop YARN
> Issue Type: Sub-task
> Affects Versions: 2.8.0
> Reporter: Li Lu
> Assignee: Li Lu
> Attachments: YARN-4219-YARN-4265.001.patch,
> YARN-4219-YARN-4265.002.patch, YARN-4219-YARN-4265.003.patch,
> YARN-4219-trunk.001.patch, YARN-4219-trunk.002.patch,
> YARN-4219-trunk.003.patch, YARN-4219-trunk.004.patch,
> YARN-4219-trunk.005.patch, YARN-4219-trunk.006.patch
>
>
> We need to have an "offline" caching storage for timeline server v1.5 after
> the changes in YARN-3942. The in memory timeline storage may run into OOM
> issues when used as a cache storage for entity file timeline storage. We can
> refactor the code and have a level db based caching storage for this use
> case.
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