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Posted to issues@trafodion.apache.org by "Oliver Bucaojit (JIRA)" <ji...@apache.org> on 2015/10/27 22:43:27 UTC
[jira] [Created] (TRAFODION-1564) Region split/balance is not being
delayed if Trx Scanner obj is present
Oliver Bucaojit created TRAFODION-1564:
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Summary: Region split/balance is not being delayed if Trx Scanner obj is present
Key: TRAFODION-1564
URL: https://issues.apache.org/jira/browse/TRAFODION-1564
Project: Apache Trafodion
Issue Type: Bug
Components: dtm
Reporter: Oliver Bucaojit
A region move/split/rebalance should be delayed when a TransactionalScanner is present on the region coprocessor 'scanners' list. The delay is not happening and is throwing the following error:
*** ERROR[8448] Unable to access Hbase interface. Call to ExpHbaseInterface::nextRow returned error HBASE_ACCESS_ERROR(-706). Cause:
java.util.concurrent.ExecutionException: java.io.IOException: PerformScan error on coprocessor call, scannerID: 0 java.io.IOException: performScan encountered Exception txID: 562962838798562 Exception: org.apache.hadoop.hbase.UnknownScannerException: ScannerId: 0, already closed?
While debugging I noticed that in the SplitBalanceHelper the code is waiting for clear scanners list && pending txn list. It should be '||' instead.
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