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

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Component/s: dtm
• Assignee: liu ming
• Reporter: Oliver Bucaojit
• Created: 27/Oct/15 21:43
• Updated: 07/Jul/16 19:19
• Resolved: 07/Jul/16 19:19

Description

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.