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From "Subbu M Iyer (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HBASE-3658) Alert when heap is over committed
Date Fri, 18 Mar 2011 14:41:30 GMT

     [ https://issues.apache.org/jira/browse/HBASE-3658?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Subbu M Iyer updated HBASE-3658:
--------------------------------

    Attachment: HBASE-3658_Alert_when_heap_is_over_committed.patch

> Alert when heap is over committed
> ---------------------------------
>
>                 Key: HBASE-3658
>                 URL: https://issues.apache.org/jira/browse/HBASE-3658
>             Project: HBase
>          Issue Type: Improvement
>    Affects Versions: 0.90.1
>            Reporter: Jean-Daniel Cryans
>             Fix For: 0.92.0
>
>         Attachments: HBASE-3658_Alert_when_heap_is_over_committed.patch
>
>
> Something I just witnessed, the block cache setting was at 70% but the max global memstore
size was at the default of 40% meaning that 110% of the heap can potentially be "assigned"
and then you need more heap to do stuff like flushing and compacting.
> We should run a configuration check that alerts the user when that happens and maybe
even refuse to start.

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