[HBASE-20350] NullPointerException in Scanner during close()

• Type: Bug
• Status: Resolved
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 2.0.0-beta-2
• Fix Version/s: 2.0.0
• Hadoop Flags: Reviewed
• Assignee: Apekshit Sharma
• Reporter: Umesh Agashe
• Created: 04/Apr/18 20:14
• Updated: 01/Aug/18 06:23
• Resolved: 11/Apr/18 21:36

Description

From logs:

2018-04-03 02:06:00,630 INFO org.apache.hadoop.hbase.regionserver.HRegion: Replaying edits from hdfs://ns1/hbase/data/default/IntegrationTestBigLinkedList_20180403004104/834545a2ae1baa47082a3bc7aab2be2f/recovered.edits/0000000000001032167
2018-04-03 02:06:00,724 INFO org.apache.hadoop.hbase.regionserver.RSRpcServices: Scanner 2120114333978460945 lease expired on region IntegrationTestBigLinkedList_20180403004104,\xF1\xFE\xCB\x98e1\xF8\xD4,1522742825561.ce0d91585a2d188123173c36d0b693a5.
2018-04-03 02:06:00,730 ERROR org.apache.hadoop.hbase.regionserver.HRegionServer: ***** ABORTING region server vd0510.halxg.cloudera.com,22101,1522626204176: Uncaught exception in executorService thread regionserver/vd0510.halxg.cloudera.com/10.17.226.13:22101.leaseChecker *****
java.lang.NullPointerException
  at org.apache.hadoop.hbase.CellComparatorImpl.compareRows(CellComparatorImpl.java:202)
  at org.apache.hadoop.hbase.CellComparatorImpl.compare(CellComparatorImpl.java:74)
  at org.apache.hadoop.hbase.CellComparatorImpl.compare(CellComparatorImpl.java:61)
  at org.apache.hadoop.hbase.regionserver.KeyValueHeap$KVScannerComparator.compare(KeyValueHeap.java:207)
  at org.apache.hadoop.hbase.regionserver.KeyValueHeap$KVScannerComparator.compare(KeyValueHeap.java:190)
  at org.apache.hadoop.hbase.regionserver.KeyValueHeap$KVScannerComparator.compare(KeyValueHeap.java:178)
  at java.util.PriorityQueue.siftDownUsingComparator(PriorityQueue.java:721)
  at java.util.PriorityQueue.siftDown(PriorityQueue.java:687)
  at java.util.PriorityQueue.poll(PriorityQueue.java:595)
  at org.apache.hadoop.hbase.regionserver.KeyValueHeap.close(KeyValueHeap.java:228)
  at org.apache.hadoop.hbase.regionserver.StoreScanner.close(StoreScanner.java:483)
  at org.apache.hadoop.hbase.regionserver.StoreScanner.close(StoreScanner.java:464)
  at org.apache.hadoop.hbase.regionserver.KeyValueHeap.close(KeyValueHeap.java:224)
  at org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.close(HRegion.java:6666)
  at org.apache.hadoop.hbase.regionserver.RSRpcServices$ScannerListener.leaseExpired(RSRpcServices.java:460)
  at org.apache.hadoop.hbase.regionserver.Leases.run(Leases.java:122)
  at java.lang.Thread.run(Thread.java:748)
2018-04-03 02:06:00,731 ERROR org.apache.hadoop.hbase.regionserver.HRegionServer: RegionServer abort: loaded coprocessors are: [org.apache.hadoop.hbase.security.access.AccessController, org.apache.hadoop.hbase.security.token.TokenProvider, org.apache.hadoop.hbase.security.access.SecureBulkLoadEndpoint, com.cloudera.navigator.audit.hbase.RegionAuditCoProcessor]
2018-04-03 02:06:00,737 INFO org.apache.hadoop.hbase.regionserver.HRegionServer: Dump of metrics as JSON on abort: {