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From "binlijin (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-19253) Dynamic change MemStoreFlusher FlushHandler workers
Date Wed, 15 Nov 2017 06:13:00 GMT

    [ https://issues.apache.org/jira/browse/HBASE-19253?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16253003#comment-16253003

binlijin commented on HBASE-19253:

bq. How is the max determined ?
Just random select.
bq. When would the if block be executed ? It seems once the sleep is executed, subsequent
iterations would always sleep.
The handlerCount can be changed when update_config. First start 8 (default) FlushHandler workers
and only 2 do the flush the others just sleep,   when handlerCount changed dynamic, the number
of workers can do flush changed.
bq. getFlusherThreadNum -> getFlusherThreadCount
bq. The second if can be 'else if'

> Dynamic change MemStoreFlusher FlushHandler workers
> ---------------------------------------------------
>                 Key: HBASE-19253
>                 URL: https://issues.apache.org/jira/browse/HBASE-19253
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: binlijin
>            Assignee: binlijin
>         Attachments: HBASE-19253.master.001.patch, HBASE-19253.master.002.patch
> Use update_config to dynamic change MemStoreFlusher FlushHandler workers

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