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From Gaojinchao <gaojinc...@huawei.com>
Subject A question about LeaseExpiredException
Date Wed, 08 Jun 2011 09:32:12 GMT
Two regionservers(My cluster is 7 regionsever / datanode) crashed, saying that an file didn’t
not exist,
and that a lease has expired (log detail below). Tried to find in this mailing list. It seems
different:

Hbase version: 0.90.3
HDFS version: cloudera 0.20.2+320

OS: swappiness :0 and ulimit :600000
HFDS:  dfs.datanode.max.xcievers: 2047

I didn't see any Xciever count exceeded message.

The cluster run normally before I modified some parameters.
Parameters:
Heap size 8G -> 10G
Hfile block 64k -> 640k( Our cluster uses gz )

Should I make the timeout to 0 or bigger ?

2011-06-02 19:27:11,666 WARN org.apache.hadoop.hbase.regionserver.MemStoreFlusher: Region
ufdr,11050,1306570494360.1caa8cf34787ccf12495bf7828e0e11c. has too many store files; delaying
flush up to 90000ms
2011-06-02 19:27:11,996 DEBUG org.apache.hadoop.hbase.io.hfile.LruBlockCache: Block cache
LRU eviction started; Attempting to free 153.29 MB of total=1.27 GB
2011-06-02 19:27:12,000 DEBUG org.apache.hadoop.hbase.io.hfile.LruBlockCache: Block cache
LRU eviction completed; freed=153.77 MB, total=1.12 GB, single=714.14 MB, multi=576.17 MB,
memory=0 KB
2011-06-02 19:27:13,940 DEBUG org.apache.hadoop.hbase.io.hfile.LruBlockCache: Block cache
LRU eviction started; Attempting to free 153.37 MB of total=1.27 GB
2011-06-02 19:27:13,943 DEBUG org.apache.hadoop.hbase.io.hfile.LruBlockCache: Block cache
LRU eviction completed; freed=153.71 MB, total=1.12 GB, single=712.98 MB, multi=576.79 MB,
memory=0 KB
2011-06-02 19:27:15,937 DEBUG org.apache.hadoop.hbase.io.hfile.LruBlockCache: Block cache
LRU eviction started; Attempting to free 153.52 MB of total=1.27 GB
2011-06-02 19:27:15,940 DEBUG org.apache.hadoop.hbase.io.hfile.LruBlockCache: Block cache
LRU eviction completed; freed=153.9 MB, total=1.12 GB, single=714.37 MB, multi=576.17 MB,
memory=0 KB
2011-06-02 19:27:18,870 DEBUG org.apache.hadoop.hbase.io.hfile.LruBlockCache: Block cache
LRU eviction started; Attempting to free 153.48 MB of total=1.27 GB
2011-06-02 19:27:18,873 DEBUG org.apache.hadoop.hbase.io.hfile.LruBlockCache: Block cache
LRU eviction completed; freed=153.76 MB, total=1.12 GB, single=716.21 MB, multi=574.92 MB,
memory=0 KB
2011-06-02 19:27:20,087 DEBUG org.apache.hadoop.hbase.regionserver.HRegion: Flush requested
on ufdr,11006,1306570494359.8d605fcdef79e342a8626062bf046a14.
2011-06-02 19:27:20,087 WARN org.apache.hadoop.hbase.regionserver.MemStoreFlusher: Region
ufdr,11006,1306570494359.8d605fcdef79e342a8626062bf046a14. has too many store files; delaying
flush up to 90000ms
2011-06-02 19:27:20,619 DEBUG org.apache.hadoop.hbase.io.hfile.LruBlockCache: Block cache
LRU eviction started; Attempting to free 153.58 MB of total=1.27 GB
2011-06-02 19:27:20,621 DEBUG org.apache.hadoop.hbase.io.hfile.LruBlockCache: Block cache
LRU eviction completed; freed=153.84 MB, total=1.12 GB, single=711.31 MB, multi=578.67 MB,
memory=0 KB
2011-06-02 19:27:22,152 DEBUG org.apache.hadoop.hbase.io.hfile.LruBlockCache: Block cache
LRU eviction started; Attempting to free 153.6 MB of total=1.27 GB
2011-06-02 19:27:22,155 DEBUG org.apache.hadoop.hbase.io.hfile.LruBlockCache: Block cache
LRU eviction completed; freed=153.86 MB, total=1.12 GB, single=714.87 MB, multi=575.12 MB,
memory=0 KB
2011-06-02 19:27:23,021 INFO org.apache.hadoop.hbase.regionserver.wal.SequenceFileLogWriter:
Using syncFs -- HDFS-200
2011-06-02 19:27:23,089 FATAL org.apache.hadoop.hbase.regionserver.HRegionServer: ABORTING
region server serverName=c3s6.site,60020,1306570384166, load=(requests=192741, regions=434,
usedHeap=4924, maxHeap=10213): IOE in log roller
org.apache.hadoop.hdfs.server.namenode.LeaseExpiredException: org.apache.hadoop.hdfs.server.namenode.LeaseExpiredException:
No lease on /hbase/.logs/c3s6.site,60020,1306570384166/c3s6.site%3A60020.1307014000772 File
does not exist. [Lease.  Holder: DFSClient_hb_rs_c3s6.site,60020,1306570384166_1306570388616,
pendingcreates: 2]
       at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkLease(FSNamesystem.java:1378)
       at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkLease(FSNamesystem.java:1369)
       at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.completeFileInternal(FSNamesystem.java:1424)
       at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.completeFile(FSNamesystem.java:1412)
       at org.apache.hadoop.hdfs.server.namenode.NameNode.complete(NameNode.java:491)
       at sun.reflect.GeneratedMethodAccessor13.invoke(Unknown Source)
       at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
       at java.lang.reflect.Method.invoke(Method.java:597)
       at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:512)
       at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:968)
       at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:964)
       at java.security.AccessController.doPrivileged(Native Method)
       at javax.security.auth.Subject.doAs(Subject.java:396)
       at org.apache.hadoop.ipc.Server$Handler.run(Server.java:962)

       at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
       at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
       at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
       at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
       at org.apache.hadoop.hbase.RemoteExceptionHandler.decodeRemoteException(RemoteExceptionHandler.java:96)
       at org.apache.hadoop.hbase.RemoteExceptionHandler.checkThrowable(RemoteExceptionHandler.java:48)
       at org.apache.hadoop.hbase.RemoteExceptionHandler.checkIOException(RemoteExceptionHandler.java:66)
       at org.apache.hadoop.hbase.regionserver.LogRoller.run(LogRoller.java:104)
2011-06-02 19:27:23,090 INFO org.apache.hadoop.hbase.regionserver.HRegionServer: Dump of metrics:
requests=63742, regions=434, stores=434, storefiles=1226, storefileIndexSize=135, memstoreSize=1077,
compactionQueueSize=241, flushQueueSize=4, usedHeap=4937, maxHeap=10213, blockCacheSize=1232047432,
blockCacheFree=374318648, blockCacheCount=1867, blockCacheHitCount=95411305, blockCacheMissCount=12524075,
blockCacheEvictedCount=6657895, blockCacheHitRatio=88, blockCacheHitCachingRatio=93
2011-06-02 19:27:23,090 INFO org.apache.hadoop.hbase.regionserver.HRegionServer: STOPPED:
IOE in log roller
2011-06-02 19:27:2
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