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https://issues.apache.org/jira/browse/HBASE-1143?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12716036#action_12716036
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Jean-Daniel Cryans commented on HBASE-1143:
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I tried different values for the memcache max size. Between each test of
randomWrite 4 on a single node (cluster wasn't available), I did a shutdown of
HBase + deleted the directory in HDFS. Here are the results:
8k memcache first try
ELAPSED_TIME=423519
second try
ELAPSED_TIME=405319
16k memcache first try
ELAPSED_TIME=437552
second try
ELAPSED_TIME=444659
1M memcache first try
ELAPSED_TIME=423519
second try
ELAPSED_TIME=432052
12M memcache first try
ELAPSED_TIME=450118
second try
ELAPSED_TIME=428693
I did also try with 1k memcache but it was complete nonsense since it was
flushing every 5 seconds. I think a sane value would be 12k so we get to flush
more often but not too much. Could make this configurable.
> region count erratic in master UI (kill server hosting root or meta and see
> how count goes awry).... make sure you have a bunch of reions in there
> --------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: HBASE-1143
> URL: https://issues.apache.org/jira/browse/HBASE-1143
> Project: Hadoop HBase
> Issue Type: Bug
> Reporter: stack
> Assignee: Jean-Daniel Cryans
> Fix For: 0.20.0
>
>
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