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https://issues.apache.org/jira/browse/TRAFODION-1740?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15088134#comment-15088134
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ASF GitHub Bot commented on TRAFODION-1740:
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GitHub user DaveBirdsall opened a pull request:
https://github.com/apache/incubator-trafodion/pull/253
[TRAFODION-1740] Add CQDs to UPDATE STATS for large tables
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/DaveBirdsall/incubator-trafodion Trafodion1740
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/incubator-trafodion/pull/253.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #253
----
commit 99a143f29910c7d3c8e02fb1bf101214568bf80a
Author: Dave Birdsall <dbirds...@apache.org>
Date: 2016-01-07T21:18:51Z
[TRAFODION-1740] Add CQDs to UPDATE STATS for large tables
----
> Use CQDs to prevent time-outs and speed sampling in UPDATE STATS
> ----------------------------------------------------------------
>
> Key: TRAFODION-1740
> URL: https://issues.apache.org/jira/browse/TRAFODION-1740
> Project: Apache Trafodion
> Issue Type: Bug
> Components: sql-cmp
> Affects Versions: 2.0-incubating, 1.3-incubating
> Environment: All; however this is particularly noticeable in clusters
> Reporter: David Wayne Birdsall
> Assignee: David Wayne Birdsall
>
> When doing UPDATE STATISTICS on large tables (one example had 17.7 billion
> rows), we sometimes time-out with an error like the following:
> SQL>update statistics for table table1 on every column sample;
> *** ERROR[9200] UPDATE STATISTICS for table TRAFODION.SEABASE.TABLE1 encounter
> ed an error (8448) from statement Process_Query. [2015-12-15 12:18:45]
> *** ERROR[8448] Unable to access Hbase interface. Call to
> ExpHbaseInterface::nex
> tRow returned error HBASE_ACCESS_ERROR(-706). Cause:
> java.util.concurrent.ExecutionException:
> org.apache.hadoop.hbase.client.RetriesE
> xhaustedException: Failed after attempts=36, exceptions:
> Tue Dec 15 17:18:19 GMT 2015, null, java.net.SocketTimeoutException:
> callTimeout
> =60000, callDuration=60303: row '?. [2015-12-15 12:18:45]
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