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https://issues.apache.org/jira/browse/HBASE-20520?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16462036#comment-16462036
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ramkrishna.s.vasudevan commented on HBASE-20520:
------------------------------------------------
bq.Example please ramkrishna.s.vasudevan (HBASE-20503 ? Where Archiving seems
to cut in prematurely?)
{code}
2018-04-30 16:17:46,666 INFO [regionserver/aep-slave1:16020.logRoller]
wal.AbstractFSWAL: Rolled WAL
/hbase1/WALs/aep-slave1,16020,1525076228236/aep-slave1%2C16020%2C1525076228236.1525076265809
with entries=9184, filesize=128.70 MB; new WAL
/hbase1/WALs/aep-slave1,16020,1525076228236/aep-slave1%2C16020%2C1525076228236.1525076266640
2018-04-30 16:17:47,716 INFO [regionserver/aep-slave1:16020.logRoller]
wal.AbstractFSWAL: Rolled WAL
/hbase1/WALs/aep-slave1,16020,1525076228236/aep-slave1%2C16020%2C1525076228236.1525076266640
with entries=9802, filesize=137.23 MB; new WAL
/hbase1/WALs/aep-slave1,16020,1525076228236/aep-slave1%2C16020%2C1525076228236.1525076267674
{code}
Logs like above. Exactly in one second we have another log roll. And both logs
are of size ~130MB in size.
> Failed effort upping default HDFS blocksize, hbase.regionserver.hlog.blocksize
> ------------------------------------------------------------------------------
>
> Key: HBASE-20520
> URL: https://issues.apache.org/jira/browse/HBASE-20520
> Project: HBase
> Issue Type: Sub-task
> Components: conf
> Reporter: stack
> Assignee: stack
> Priority: Major
> Fix For: 2.0.1
>
> Attachments: HBASE-20520.branch-2.0.001.patch,
> HBASE-20520.branch-2.0.002.patch, HBASE-20520.branch-2.0.003.patch,
> HBASE-20520.branch-2.0.004.patch, HBASE-20520.branch-2.0.005.patch
>
>
> Good one found by our [~mdrob]. Problem in the parent issue where failed
> attempt doubling default block size but halving the size at which roll -- so
> we end up in roughly same place only we make less small WALs in those cases
> where we are writing furiously and fail to roll before starting a new block.
> From Drob: ".../we drop default log roll to 0.5, but we don't actually
> increase the block size... AbstractProtobufLogWriter.java:164 still uses
> default HDFS block sizing and AbstractFSWAL.java:408 block size is only used
> in a log message, never actually makes it to files...".
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