You are viewing a plain text version of this content. The canonical link for it is here.

Posted to dev@hbase.apache.org by "Matteo Bertozzi (JIRA)" <ji...@apache.org> on 2015/04/22 12:50:59 UTC

[jira] [Created] (HBASE-13529) Procedure v2 - WAL Improvements

Matteo Bertozzi created HBASE-13529:
---------------------------------------

             Summary: Procedure v2 - WAL Improvements
                 Key: HBASE-13529
                 URL: https://issues.apache.org/jira/browse/HBASE-13529
             Project: HBase
          Issue Type: Sub-task
          Components: proc-v2
    Affects Versions: 2.0.0, 1.1.0
            Reporter: Matteo Bertozzi
            Assignee: Matteo Bertozzi
            Priority: Minor
             Fix For: 2.0.0, 1.1.0
         Attachments: HBASE-13529-v0.patch

from the discussion in HBASE-12439 the wal was resulting slow.
 * there is an error around the awake of the slotCond.await(), causing more wait then necessary
 * ArrayBlockingQueue is dog slow, replace it with ConcurrentLinkedQueue
 * roll the wal only if reaches a threshold (conf ops) to amortize the cost
 * hsync() is used by default, when the normal wal is using just hflush() make it tunable via conf



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)