[IGNITE-6553] Standalone WAL iterator fails to handle delete WAL data records

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 2.1
• Fix Version/s: 2.4
• Component/s: persistence
• Assignee: Dmitry Pavlov
• Reporter: Dmitry Pavlov
• Created: 03/Oct/17 16:22
• Updated: 05/Oct/17 19:32
• Resolved: 05/Oct/17 19:32

Description

This failure occurds during unwrapping value, and this make impossible to unwrap value and handle any values

2017-10-03 19:21:29,629][ERROR][test-runner-#1%reader.IgniteWalReaderTest%][root] Unable to convert value [null]
java.lang.NullPointerException
	at org.apache.ignite.internal.pagemem.wal.record.UnwrapDataEntry.unwrappedValue(UnwrapDataEntry.java:110)
	at org.apache.ignite.internal.processors.cache.persistence.db.wal.reader.IgniteWalReaderTest.iterateAndCountDataRecord(IgniteWalReaderTest.java:970)
	at org.apache.ignite.internal.processors.cache.persistence.db.wal.reader.IgniteWalReaderTest.scanIterateAndCount(IgniteWalReaderTest.java:551)
	at org.apache.ignite.internal.processors.cache.persistence.db.wal.reader.IgniteWalReaderTest.testRemoveOperationPresentedForDataEntry(IgniteWalReaderTest.java:863)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at junit.framework.TestCase.runTest(TestCase.java:176)
	at org.apache.ignite.testframework.junits.GridAbstractTest.runTestInternal(GridAbstractTest.java:2000)
	at org.apache.ignite.testframework.junits.GridAbstractTest.access$000(GridAbstractTest.java:132)
	at org.apache.ignite.testframework.junits.GridAbstractTest$5.run(GridAbstractTest.java:1915)
	at java.lang.Thread.run(Thread.java:748)

WAL log content causes failure

{CREATE for 1, tx=GridCacheVersion [topVer=118527801, order=1507047798537, nodeOrder=1], }
{UPDATE for 2, tx=GridCacheVersion [topVer=118527801, order=1507047798537, nodeOrder=1], }
{CREATE for 3, tx=GridCacheVersion [topVer=118527801, order=1507047798537, nodeOrder=1], }
{UPDATE for 4, tx=GridCacheVersion [topVer=118527801, order=1507047798537, nodeOrder=1], }
{DELETE for 5, tx=GridCacheVersion [topVer=118527801, order=1507047798537, nodeOrder=1], }
{UPDATE for 6, tx=GridCacheVersion [topVer=118527801, order=1507047798537, nodeOrder=1], }
{CREATE for 7, tx=GridCacheVersion [topVer=118527801, order=1507047798537, nodeOrder=1], }
{UPDATE for 8, tx=GridCacheVersion [topVer=118527801, order=1507047798537, nodeOrder=1], }
{CREATE for 9, tx=GridCacheVersion [topVer=118527801, order=1507047798537, nodeOrder=1], }

Issue Links

• breaks: IGNITE-6235 Add ability to handle CacheObject from DataRecord in standalone WAL iterator
• relates to: IGNITE-5558 Add ability to read WAL outside of an Ignite node
• links to: GitHub Pull Request #2797