[HBASE-10517] NPE in MetaCache.clearCache()

• Type: Sub-task
• Status: Closed
• Priority: Trivial
• Resolution: Fixed
• Fix Version/s: 0.99.0, hbase-10070
• Assignee: Enis Soztutar
• Reporter: Enis Soztutar
• Created: 13/Feb/14 01:21
• Updated: 21/Feb/15 23:29
• Resolved: 20/Feb/14 00:06

Description

MetaCache introduced in HBASE-10347 is vulnerable to NPE. TestDistributedLogSplitting is flaky due to this.

   <error type="java.lang.NullPointerException">java.lang.NullPointerException
  at org.apache.hadoop.hbase.client.MetaCache.clearCache(MetaCache.java:339)
  at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.deleteCachedRegionLocation(ConnectionManager.java:2033)
  at org.apache.hadoop.hbase.client.RegionServerCallable.throwable(RegionServerCallable.java:132)
  at org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithRetries(RpcRetryingCaller.java:129)
  at org.apache.hadoop.hbase.client.HTable.getRowOrBefore(HTable.java:744)
  at org.apache.hadoop.hbase.client.MetaScanner.metaScan(MetaScanner.java:147)
  at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.prefetchRegionCache(ConnectionManager.java:1071)
  at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateRegionInMeta(ConnectionManager.java:1136)
  at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateRegion(ConnectionManager.java:1023)
  at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateRegion(ConnectionManager.java:978)