NPE in KeyValue$KVComparator.compare when compacting
----------------------------------------------------
Key: HBASE-3224
URL: https://issues.apache.org/jira/browse/HBASE-3224
Project: HBase
Issue Type: Bug
Reporter: Jean-Daniel Cryans
Priority: Critical
Fix For: 0.90.0
While testing normal insertion via PE, I got this recurrent NPE coming out of
KeyValue$KVComparator.compare while it's compacting. So far I saw 2 different
stack traces:
{noformat}
java.lang.NullPointerException
at
org.apache.hadoop.hbase.KeyValue$KVComparator.compare(KeyValue.java:1356)
at
org.apache.hadoop.hbase.regionserver.KeyValueHeap.reseek(KeyValueHeap.java:250)
at
org.apache.hadoop.hbase.regionserver.StoreScanner.reseek(StoreScanner.java:385)
at
org.apache.hadoop.hbase.regionserver.StoreScanner.next(StoreScanner.java:291)
at
org.apache.hadoop.hbase.regionserver.StoreScanner.next(StoreScanner.java:324)
at org.apache.hadoop.hbase.regionserver.Store.compact(Store.java:926)
at org.apache.hadoop.hbase.regionserver.Store.compact(Store.java:734)
{noformat}
{noformat}
java.lang.NullPointerException
at
org.apache.hadoop.hbase.KeyValue$KVComparator.compare(KeyValue.java:1356)
at
org.apache.hadoop.hbase.regionserver.KeyValueHeap$KVScannerComparator.compare(KeyValueHeap.java:180)
at
org.apache.hadoop.hbase.regionserver.KeyValueHeap$KVScannerComparator.compare(KeyValueHeap.java:156)
at
org.apache.hadoop.hbase.regionserver.KeyValueHeap$KVScannerComparator.compare(KeyValueHeap.java:146)
at java.util.PriorityQueue.siftUpUsingComparator(PriorityQueue.java:594)
at java.util.PriorityQueue.siftUp(PriorityQueue.java:572)
at java.util.PriorityQueue.offer(PriorityQueue.java:274)
at java.util.PriorityQueue.add(PriorityQueue.java:251)
at
org.apache.hadoop.hbase.regionserver.KeyValueHeap.reseek(KeyValueHeap.java:258)
at
org.apache.hadoop.hbase.regionserver.StoreScanner.reseek(StoreScanner.java:385)
at
org.apache.hadoop.hbase.regionserver.StoreScanner.next(StoreScanner.java:291)
at
org.apache.hadoop.hbase.regionserver.StoreScanner.next(StoreScanner.java:324)
at org.apache.hadoop.hbase.regionserver.Store.compact(Store.java:926)
at org.apache.hadoop.hbase.regionserver.Store.compact(Store.java:734)
{noformat}
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