hbase-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Anoop Sam John (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-10713) A MemStore implementation with in memory flushes to CellBlocks
Date Mon, 10 Mar 2014 16:52:43 GMT
Anoop Sam John created HBASE-10713:
--------------------------------------

             Summary: A MemStore implementation with in memory flushes to CellBlocks
                 Key: HBASE-10713
                 URL: https://issues.apache.org/jira/browse/HBASE-10713
             Project: HBase
          Issue Type: New Feature
            Reporter: Anoop Sam John
            Assignee: Anoop Sam John
             Fix For: 0.99.0


After HBASE-10648 we can plugin any implementation for MemStore. This issue aims at coming
up with an implementation, in which we will have in between in memory flushes. This will reduce
the need to keep lots of KVs in heap as well as in CSLM.  CSLM perform poor when no# items
in it increases.  We can keep create CellBlocks (contigous byte[] like HFile block) out of
KVs and keep it as one object rather than many KVs.  At some point in time, MemStore might
have N CellBlocks and one CSLM.  

These in memory CellBlocks can be compacted to one bigger block in between. We can target
that in follow on tasks once the basic code is ready.



--
This message was sent by Atlassian JIRA
(v6.2#6252)

Mime
View raw message