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https://issues.apache.org/jira/browse/TRAFODION-2041?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15321209#comment-15321209
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David Wayne Birdsall edited comment on TRAFODION-2041 at 6/8/16 6:54 PM:
-------------------------------------------------------------------------
I was able to reproduce this issue on a workstation by adding the following to
hbase-site.xml in the usual install_local_hadoop configuration:
<property>
\<name\>hbase.bucketcache.ioengine\</name\>
\<value\>offheap\</value\>
\</property\>
\<property\>
\<name\>hbase.bucketcache.size\</name\>
\<value\>1000\</value\>
\</property\>
(I had to experiment with the hbase.bucketcache.size parameter a few times to
make it small enough that HMaster could come up.)
I found that the original suggested fix still failed with an OOM. Therefore, I
changed the fix to simply unset the hbase.bucketcache.ioengine property in
HBaseClient.estimateRowCount if it is found.
was (Author: davebirdsall):
I was able to reproduce this issue on a workstation by adding the following to
hbase-site.xml in the usual install_local_hadoop configuration:
\<property\>
\<name\>hbase.bucketcache.ioengine\</name\>
\<value\>offheap\</value\>
\</property\>
\<property\>
\<name\>hbase.bucketcache.size\</name\>
\<value\>1000\</value\>
\</property\>
(I had to experiment with the hbase.bucketcache.size parameter a few times to
make it small enough that HMaster could come up.)
I found that the original suggested fix still failed with an OOM. Therefore, I
changed the fix to simply unset the hbase.bucketcache.ioengine property in
HBaseClient.estimateRowCount if it is found.
> UPDATE STATS uses select count(*) on large tables on HDP 2.3.4
> --------------------------------------------------------------
>
> Key: TRAFODION-2041
> URL: https://issues.apache.org/jira/browse/TRAFODION-2041
> Project: Apache Trafodion
> Issue Type: Bug
> Components: sql-cmp
> Affects Versions: 2.1-incubating
> Reporter: David Wayne Birdsall
> Assignee: David Wayne Birdsall
> Priority: Critical
> Fix For: 2.1-incubating
>
>
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