[DERBY-5030] "index-stat-thread" java.lang.NullPointerException at store.access.btree.ControlRow.getControlRowForPage in suites.All

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 10.8.1.2
• Fix Version/s: 10.8.1.2
• Component/s: Services
• Labels: derby_backport_reject_10_5
• Urgency: Blocker
• Issue & fix info: High Value Fix
• Bug behavior facts: Regression, Regression Test Failure
• Assignee: Richard N. Hillegas
• Reporter: Katherine Marsden
• Created: 12/Feb/11 00:14
• Updated: 15/Nov/13 08:15
• Resolved: 08/Oct/12 15:45

Description

I happened to be looking at the tinderbox results at:
http://dbtg.foundry.sun.com/derby/test/tinderbox_trunk16/jvm1.6/testing/testlog/SunOS-5.10_i86pc-i386/1069920-org.apache.derbyTesting.functionTests.suites.All_diff.txt

And saw this at the end of the run:
Exception in thread "index-stat-thread" java.lang.NullPointerException
at org.apache.derby.impl.store.access.btree.ControlRow.getControlRowForPage(Unknown Source)
at org.apache.derby.impl.store.access.btree.ControlRow.get(Unknown Source)
at org.apache.derby.impl.store.access.btree.ControlRow.get(Unknown Source)
at org.apache.derby.impl.store.access.btree.BTreeScan.reposition(Unknown Source)
at org.apache.derby.impl.store.access.btree.BTreeForwardScan.fetchRows(Unknown Source)
at org.apache.derby.impl.store.access.btree.BTreeScan.fetchNextGroup(Unknown Source)
at org.apache.derby.impl.services.daemon.IndexStatisticsDaemonImpl$KeyComparator.fetchRows(Unknown Source)
at org.apache.derby.impl.services.daemon.IndexStatisticsDaemonImpl.updateIndexStatsMinion(Unknown Source)
at org.apache.derby.impl.services.daemon.IndexStatisticsDaemonImpl.generateStatistics(Unknown Source)
at org.apache.derby.impl.services.daemon.IndexStatisticsDaemonImpl.run(Unknown Source)
at java.lang.Thread.run(Thread.java:619)

Issue Links

• is duplicated by: DERBY-5031 Exception in thread "index-stat-thread" java.lang.NullPointerException while calling ControlRow.getControlRowForPage(Unknown Source)
• is part of: DERBY-4939 Enable istat daemon and tests
• is related to: DERBY-5037 Assertion failure from index-stat-thread when running AutomaticIndexStatisticsTest