Anoop Sam John created HBASE-17338:
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Summary: Treat Cell data size under global memstore heap size only
when that Cell can not be copied to MSLAB
Key: HBASE-17338
URL: https://issues.apache.org/jira/browse/HBASE-17338
Project: HBase
Issue Type: Sub-task
Affects Versions: 2.0.0
Reporter: Anoop Sam John
Assignee: Anoop Sam John
Fix For: 2.0.0
We have only data size and heap overhead being tracked globally. Off heap
memstore works with off heap backed MSLAB pool. But a cell, when added to
memstore, not always getting copied to MSLAB. Append/Increment ops doing an
upsert, dont use MSLAB. Also based on the Cell size, we sometimes avoid MSLAB
copy. But now we track these cell data size also under the global memstore
data size which indicated off heap size in case of off heap memstore. For
global checks for flushes (against lower/upper watermark levels), we check this
size against max off heap memstore size. We do check heap overhead against
global heap memstore size (Defaults to 40% of xmx) But for such cells the data
size also should be accounted under the heap overhead.
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