NPE when trying to roll logs ---------------------------- Key: HBASE-3239 URL: https://issues.apache.org/jira/browse/HBASE-3239 Project: HBase Issue Type: Bug Components: regionserver Affects Versions: 0.90.0 Reporter: Prakash Khemani
Note from Kannan findMemstoresWithEditsEqualOrOlderThan() can return NULL it seems like. And we don't check NULL, before "region.length". regions = findMemstoresWithEditsEqualOrOlderThan(this.outputfiles.firstKey(), this.lastSeqWritten); StringBuilder sb = new StringBuilder(); for (int i = 0; i < regions.length; i++) { === Stack Trace 2010-11-15 19:19:54,258 DEBUG org.apache.hadoop.hbase.io.hfile.LruBlockCache: LRU Stats: total=6.1 GB, free=1.71 GB, max=7.81 GB, blocks=385740, accesses=7020255, hits=6329399, hitRatio=90.15%%, cachingAccesses=6765050, cachingHits=6329399, cachingHitsRatio=93.56%%, evictions=1, evicted=49911, evictedPerRun=49911.0 2010-11-15 19:21:05,204 INFO org.apache.hadoop.hbase.regionserver.wal.SequenceFileLogWriter: Using syncFs -- HDFS-200 2010-11-15 19:21:05,211 INFO org.apache.hadoop.hbase.regionserver.wal.HLog: Roll /PUMAHBASE001-SNC5-HBASE/.logs/pumahbase042.snc5.facebook.com,60020,1289856892583/10.38.28.57%3A60020.1289877154987, entries=649004, filesize=255069060. New hlog /PUMAHBASE001-SNC5-HBASE/.logs/pumahbase042.snc5.facebook.com,60020,1289856892583/10.38.28.57%3A60020.1289877665062 2010-11-15 19:21:05,222 ERROR org.apache.hadoop.hbase.regionserver.LogRoller: Log rolling failed java.lang.NullPointerException at org.apache.hadoop.hbase.regionserver.wal.HLog.cleanOldLogs(HLog.java:648) at org.apache.hadoop.hbase.regionserver.wal.HLog.rollWriter(HLog.java:528) at org.apache.hadoop.hbase.regionserver.LogRoller.run(LogRoller.java:94) 2010-11-15 19:21:05,226 FATAL org.apache.hadoop.hbase.regionserver.HRegionServer: ABORTING region server serverName=pumahbase042.snc5.facebook.com,60020,1289856892583, load=(requests=3476, regions=40, usedHeap=8388, maxHeap=15987): Log rolling failed java.lang.NullPointerException at org.apache.hadoop.hbase.regionserver.wal.HLog.cleanOldLogs(HLog.java:648) at org.apache.hadoop.hbase.regionserver.wal.HLog.rollWriter(HLog.java:528) at org.apache.hadoop.hbase.regionserver.LogRoller.run(LogRoller.java:94) 2010-11-15 19:21:05,227 INFO org.apache.hadoop.hbase.regionserver.HRegionServer: Dump of metrics: request=1264.5834, regions=40, stores=70, storefiles=98, storefileIndexSize=35, memstoreSize=83, compactionQueueSize=0, usedHeap=8370, maxHeap=15987, blockCacheSize=6593768536, blockCacheFree=1788154792, blockCacheCount=388283, blockCacheHitRatio=90, blockCacheHitCachingRatio=93 2010-11-15 19:21:05,227 INFO org.apache.hadoop.hbase.regionserver.HRegionServer: STOPPED: Log rolling failed 2010-11-15 19:21:05,227 INFO org.apache.hadoop.hbase.regionserver.LogRoller: LogRoller exiting. 2010-11-15 19:21:07,255 INFO org.apache.hadoop.ipc.HBaseServer: Stopping server on 60020 === -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.