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Anoop Sam John commented on HBASE-18294: ---------------------------------------- bq.If the offheap is 100x the onheap in size, and the threshold is set to offheap (100x) + onheap (1x) – i.e. 101x – then what happens when the onheap occupancy exceeds 1x? This is about the per region flush decision boss. Correct me if wrong [~eshcar]. Globally the decision should be with ||. We have barrier for off heap and on heap memory and when any of the barrier is about to be crossed, it will result in forced flushes. > 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: Improvement > Affects Versions: 3.0.0 > Reporter: Eshcar Hillel > Assignee: Eshcar Hillel > Priority: Major > Fix For: 2.0.0-beta-2 > > Attachments: HBASE-18294.01.patch, HBASE-18294.01.patch, > HBASE-18294.01.patch, HBASE-18294.01.patch, HBASE-18294.01.patch, > HBASE-18294.01.patch, HBASE-18294.01.patch, HBASE-18294.02.patch, > HBASE-18294.03.patch, HBASE-18294.04.patch, HBASE-18294.05.patch, > HBASE-18294.06.patch, HBASE-18294.07.patch, HBASE-18294.07.patch, > HBASE-18294.08.patch, HBASE-18294.09.patch, HBASE-18294.10.patch, > HBASE-18294.11.patch, HBASE-18294.11.patch, HBASE-18294.12.patch, > HBASE-18294.13.patch, HBASE-18294.15.patch, HBASE-18294.16.patch, > HBASE-18294.master.01.patch, HBASE-18294.master.01.patch > > > 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). -- This message was sent by Atlassian JIRA (v7.6.3#76005)