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https://issues.apache.org/jira/browse/HBASE-10888?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13957372#comment-13957372
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stack commented on HBASE-10888:
-------------------------------
Some rough numbers have it that they are about the same:
0.98.1 took just over 6 seconds for ten logs (but one less splitter in the
cluster since master now participates on trunk)
{code}
2014-04-01 22:35:24,015 INFO [main-EventThread] zookeeper.RegionServerTracker:
RegionServer ephemeral node deleted, processing expiration
[c2023.halxg.cloudera.com,60020,1396416642448]
2014-04-01 22:35:28,726 INFO [MASTER_SERVER_OPERATIONS-c2020:60000-0]
master.SplitLogManager: finished splitting (more than or equal to) 1172247640
bytes in 10 log files in
[hdfs://c2020.halxg.cloudera.com:8020/hbase/WALs/c2023.halxg.cloudera.com,60020,1396416642448-splitting]
in 4668ms
2014-04-01 22:35:30,039 INFO [MASTER_SERVER_OPERATIONS-c2020:60000-0]
handler.ServerShutdownHandler: Finished processing of shutdown of
c2023.halxg.cloudera.com,60020,1396416642448
{code}
For trunk/0.99, took 6.3seconds which is a little longer.
{code}
2014-04-01 22:25:33,011 INFO [main-EventThread] zookeeper.RegionServerTracker:
RegionServer ephemeral node deleted, processing expiration
[c2021.halxg.cloudera.com,16020,1396415234624]
2014-04-01 22:25:39,388 INFO [M_LOG_REPLAY_OPS-c2020:16020-1]
master.SplitLogManager: finished splitting (more than or equal to) 1303360768
bytes in 11 log files in
[hdfs://c2020.halxg.cloudera.com:8020/hbase/WALs/c2021.halxg.cloudera.com,16020,1396415234624-splitting]
in 5746ms
{code}
Let me try and do a bigger test, more like what [~jeffreyz] had over in
HBASE-7006
> Enable distributed log replay as default
> ----------------------------------------
>
> Key: HBASE-10888
> URL: https://issues.apache.org/jira/browse/HBASE-10888
> Project: HBase
> Issue Type: Sub-task
> Reporter: stack
> Assignee: stack
> Attachments: 10888.txt, 10888v2.txt, 10888v2.txt, 10888v2.txt,
> 10888v3.txt
>
>
> Enable 'distributed log replay' by default. Depends on hfilev3 being enabled.
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