Sean Broeder created TRAFODION-2125:
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Summary: ID requests timeout to idtmsrv process
Key: TRAFODION-2125
URL: https://issues.apache.org/jira/browse/TRAFODION-2125
Project: Apache Trafodion
Issue Type: Bug
Components: dtm
Affects Versions: any
Reporter: Sean Broeder
Assignee: Sean Broeder
>>SELECT * FROM l8view15;
*** ERROR[8448] Unable to access Hbase interface. Call to
ExpHbaseInterface::scanOpen returned error HBASE_OPEN_ERROR(-704). Cause:
java.io.IOException: registerTransaction: IdTm threw exception
org.apache.hadoop.hbase.regionserver.transactional.IdTmException: id
threw:org.apache.hadoop.hbase.regionserver.transactional.IdTmException: ferr=40
org.apache.hadoop.hbase.client.transactional.RMInterface.registerTransaction(RMInterface.java:494)
org.apache.hadoop.hbase.client.transactional.RMInterface.registerTransaction(RMInterface.java:560)
org.apache.hadoop.hbase.client.transactional.RMInterface.getScanner(RMInterface.java:789)
org.trafodion.sql.HTableClient.startScan(HTableClient.java:1014)
The issue here is not that the request timed out as is implied by the error 40.
Instead the issue is that following the link request to the idtmsrv process
XWAIT(LDONE, timeout) is called. LDONE is returned, however the subsequent
call to BMSG_LISTEN returns NOWORK instead of LDONE, and we never called BREAK.
The code then assumed the request timed out.
The fix is to test to see if NOWORK is returned from BMSG_LISTEN and then retry
the XWAIT
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