hadoop fsck / Status: HEALTHY Total size: 1382743735840 B
Total dirs: 1127 Total files: 476753 Total blocks (validated): 490085 (avg. block size 2821436 B) Minimally replicated blocks: 490085 (100.0 %) Over-replicated blocks: 0 (0.0 %) Under-replicated blocks: 0 (0.0 %) Mis-replicated blocks: 0 (0.0 %) Default replication factor: 1 Average block replication: 1.0 Corrupt blocks: 0 Missing replicas: 0 (0.0 %) Number of data-nodes: 1 Number of racks: 1 FSCK ended at Thu Nov 20 13:57:44 CST 2014 in 9065 milliseconds On Thu, Nov 20, 2014 at 11:25 AM, Ted Yu <yuzhih...@gmail.com> wrote: > Have you tried using fsck ? > > Cheers > > On Wed, Nov 19, 2014 at 6:56 PM, Li Li <fancye...@gmail.com> wrote: > >> also in hdfs ui, I found Number of Under-Replicated Blocks : 497741 >> it seems there are many bad blocks. is there any method to rescue good >> data? >> >> On Thu, Nov 20, 2014 at 10:52 AM, Li Li <fancye...@gmail.com> wrote: >> > I am running a single node pseudo hbase cluster on top of a pseudo >> hadoop. >> > hadoop is 1.2.1 and replication factor of hdfs is 1. And the hbase >> > version is 0.98.5 >> > Last night, I found the region server crashed (the process is gone) >> > I found many logs say >> > [JvmPauseMonitor] util.JvmPauseMonitor: Detected pause in JVM or host >> > machine (eg GC): pause of approximately 2176ms >> > >> > GC pool 'ParNew' had collection(s): count=1 time=0ms >> > >> > Then I use ./bin/stop-hbase.sh to stop it and then start-hbase.sh to >> restart it. >> > Then I can see many logs in region server like: >> > >> > wal.HLogSplitter: Creating writer >> > path=hdfs:// >> 192.168.10.121:9000/hbase/data/default/baiducrawler.webpage/5e7f8f9c63c12a70892f3a774e3186f4/recovered.edits/0000000000000121515.temp >> > region=5e7f8f9c63c12a70892f3a774e3186f4 >> > >> > The cpu usage is high and disk read/write speed is 20MB/s. So I let it >> > run and go home. >> > Today morning, I found the region server crash and found logs: >> > >> > hdfs.DFSClient: Failed to close file >> > >> /hbase/data/default/baiducrawler.webpage/1a4628670035e53d38f87b534b3302bf/recovered.edits/0000000000000116237.temp >> > >> > org.apache.hadoop.ipc.RemoteException: java.io.IOException: File >> > >> /hbase/data/default/baiducrawler.webpage/1a4628670035e53d38f87b534b3302bf/recovered.edits/0000000000000116237.temp >> > could only be replicated to 0 nodes, instead of 1 >> > >> > at >> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:1920) >> > >> > at >> org.apache.hadoop.hdfs.server.namenode.NameNode.addBlock(NameNode.java:783) >> > >> > at sun.reflect.GeneratedMethodAccessor9.invoke(Unknown Source) >> > >> > at >> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) >> > >> > at java.lang.reflect.Method.invoke(Method.java:606) >> > >> > at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:587) >> > >> > at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1432) >> > >> > at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1428) >> > >> > at java.security.AccessController.doPrivileged(Native Method) >> > >> > at javax.security.auth.Subject.doAs(Subject.java:415) >> > >> > at >> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1190) >> > >> > at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1426) >> > >> > >> > at org.apache.hadoop.ipc.Client.call(Client.java:1113) >> > >> > at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:229) >> > >> > at com.sun.proxy.$Proxy8.addBlock(Unknown Source) >> > >> > at sun.reflect.GeneratedMethodAccessor17.invoke(Unknown Source) >> > >> > at >> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) >> > >> > at java.lang.reflect.Method.invoke(Method.java:606) >> > >> > at >> org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:85) >> > >> > at >> org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:62) >> > >> > at com.sun.proxy.$Proxy8.addBlock(Unknown Source) >> > >> > at sun.reflect.GeneratedMethodAccessor17.invoke(Unknown Source) >> > >> > at >> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) >> > >> > at java.lang.reflect.Method.invoke(Method.java:606) >> > >> > at >> org.apache.hadoop.hbase.fs.HFileSystem$1.invoke(HFileSystem.java:294) >> > >> > at com.sun.proxy.$Proxy9.addBlock(Unknown Source) >> > >> > at >> org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.locateFollowingBlock(DFSClient.java:3720) >> > >> > at >> org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.nextBlockOutputStream(DFSClient.java:3580) >> > >> > at >> org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.access$2600(DFSClient.java:2783) >> > >> > at >> org.apache.hadoop.hdfs.DFSClient$DFSOutputStream$DataStreamer.run(DFSClient.java:3023 >>
