Re: " maxHeap=3991" Seems like an awful lot of data to put in a 4gb heap.
-----Original Message----- From: 陈加俊 [mailto:cjjvict...@gmail.com] Sent: Monday, April 11, 2011 8:35 PM To: hbase-u...@hadoop.apache.org Subject: too many regions cause OME ? Is it too many regions ? Is the memory enough ? HBase-0.20.6 2011-04-12 00:16:31,844 FATAL org.apache.hadoop.hbase.regionserver.HRegionServer: OutOfMemoryError, aborting. java.lang.OutOfMemoryError: Java heap space at java.io.BufferedInputStream.<init>(BufferedInputStream.java:178) at org.apache.hadoop.hdfs.DFSClient$BlockReader.newBlockReader(DFSClient.java:1380) at org.apache.hadoop.hdfs.DFSClient$DFSInputStream.blockSeekTo(DFSClient.java:1648) at org.apache.hadoop.hdfs.DFSClient$DFSInputStream.read(DFSClient.java:1767) at java.io.DataInputStream.readFully(DataInputStream.java:178) at java.io.DataInputStream.readFully(DataInputStream.java:152) at org.apache.hadoop.hbase.io.hfile.HFile$FixedFileTrailer.deserialize(HFile.java:1368) at org.apache.hadoop.hbase.io.hfile.HFile$Reader.readTrailer(HFile.java:848) at org.apache.hadoop.hbase.io.hfile.HFile$Reader.loadFileInfo(HFile.java:793) at org.apache.hadoop.hbase.regionserver.StoreFile.open(StoreFile.java:273) at org.apache.hadoop.hbase.regionserver.StoreFile.<init>(StoreFile.java:129) at org.apache.hadoop.hbase.regionserver.Store.loadStoreFiles(Store.java:410) at org.apache.hadoop.hbase.regionserver.Store.<init>(Store.java:221) at org.apache.hadoop.hbase.regionserver.HRegion.instantiateHStore(HRegion.java:1636) at org.apache.hadoop.hbase.regionserver.HRegion.initialize(HRegion.java:321) at org.apache.hadoop.hbase.regionserver.HRegionServer.instantiateRegion(HRegionServer.java:1566) at org.apache.hadoop.hbase.regionserver.HRegionServer.openRegion(HRegionServer.java:1533) at org.apache.hadoop.hbase.regionserver.HRegionServer$Worker.run(HRegionServer.java:1453) at java.lang.Thread.run(Thread.java:619) 2011-04-12 00:16:31,847 INFO org.apache.hadoop.hbase.regionserver.HRegionServer: Dump of metrics: request=0.0, regions=1624, stores=3075, storefiles=2526, storefileIndexSize=374, memstoreSize=339, compactionQueueSize=0, usedHeap=3990, maxHeap=3991, blockCacheSize=706107016, blockCacheFree=131010552, blockCacheCount=10631, blockCacheHitRatio=58, fsReadLatency=0, fsWriteLatency=0, fsSyncLatency=0 2011-04-12 00:16:31,848 INFO org.apache.hadoop.hbase.regionserver.HRegionServer: worker thread exiting -- Thanks & Best regards jiajun
