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From "Prabhu Joseph (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-9374) HBaseTimelineWriterImpl sync writes has to avoid thread blocking if storage down
Date Wed, 19 Jun 2019 15:10:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-9374?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16867747#comment-16867747
] 

Prabhu Joseph commented on YARN-9374:
-------------------------------------

Thanks [~snemeth] for reviewing.

1. Have changed the variable name from hbi to writer.
2. Was assuming wrongly that Exception at that point will only mean HbaseStorageMonitor failed
to detect Hbase Up. Have modified the testcase little bit and the assertion message to be
more clear.

> HBaseTimelineWriterImpl sync writes has to avoid thread blocking if storage down
> --------------------------------------------------------------------------------
>
>                 Key: YARN-9374
>                 URL: https://issues.apache.org/jira/browse/YARN-9374
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: ATSv2
>    Affects Versions: 3.2.0
>            Reporter: Prabhu Joseph
>            Assignee: Prabhu Joseph
>            Priority: Major
>         Attachments: YARN-9374-001.patch, YARN-9374-002.patch, YARN-9374-003.patch, YARN-9374-004.patch
>
>
> HBaseTimelineWriterImpl sync writes has to avoid thread blocking if storage is down.
Currently we check if hbase storage is down in TimelineReader before reading entities and
fail immediately in YARN-8302. Similar fix is needed for write. Async is handled in YARN-9335.



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