[jira] [Assigned] (TRAFODION-1564) Region split/balance is not being delayed if Trx Scanner obj is present

["liu ming (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/TRAFODION-1564?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

liu ming reassigned TRAFODION-1564:
-----------------------------------

    Assignee: liu ming

> 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
>            Assignee: liu ming
>
> 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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