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From "Eshcar Hillel (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-18294) Reduce global heap pressure: flush based on heap occupancy
Date Sun, 12 Nov 2017 14:10:00 GMT

     [ https://issues.apache.org/jira/browse/HBASE-18294?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Eshcar Hillel updated HBASE-18294:
----------------------------------
    Summary: Reduce global heap pressure: flush based on heap occupancy  (was: Flush is based
on data size instead of heap size)

> Reduce global heap pressure: flush based on heap occupancy
> ----------------------------------------------------------
>
>                 Key: HBASE-18294
>                 URL: https://issues.apache.org/jira/browse/HBASE-18294
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Eshcar Hillel
>            Assignee: Eshcar Hillel
>
> A region is flushed if its memory component exceed a threshold (default size is 128MB).
> A flush policy decides whether to flush a store by comparing the size of the store to
another threshold (that can be configured with hbase.hregion.percolumnfamilyflush.size.lower.bound).
> Currently the implementation (in both cases) compares the data size (key-value only)
to the threshold where it should compare the heap size (which includes index size, and metadata).



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