ramkrishna.s.vasudevan created HBASE-13579:
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Summary: Avoid isCellTTLExpired() for NO-TAG cases
Key: HBASE-13579
URL: https://issues.apache.org/jira/browse/HBASE-13579
Project: HBase
Issue Type: Sub-task
Affects Versions: 2.0.0
Reporter: ramkrishna.s.vasudevan
Assignee: ramkrishna.s.vasudevan
As observed in this JIRA's performance test, we are always calling the
isCellTTLExpired() for every cell and internally it is parsing the keyLength,
valueLength() to get the tagsLength after which we decide whether Cell level
TTL is present are not.
This JIRA aims to avoid this check if all the readers of the storescanner knows
that there are no tags to read. Note that, for the memstore scanner we will do
that in another JIRA, which I suppose Stack had already raised to avoid tag
length while flushing (for the NO-TAG) case.
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