David Wayne Birdsall created TRAFODION-1740: -----------------------------------------------
Summary: 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] -- This message was sent by Atlassian JIRA (v6.3.4#6332)