Shengjun Xin created HDFS-6520:
----------------------------------
Summary: Failed to run fsck -move
Key: HDFS-6520
URL: https://issues.apache.org/jira/browse/HDFS-6520
Project: Hadoop HDFS
Issue Type: Bug
Affects Versions: 2.4.0
Reporter: Shengjun Xin
I met some error when I run fsck -move.
My steps are as the following:
1. Set up a pseudo cluster
2. Copy a file to hdfs
3. Corrupt a block of the file
4. Run fsck to check:
{code}
Connecting to namenode via http://localhost:50070
FSCK started by hadoop (auth:SIMPLE) from /127.0.0.1 for path /user/hadoop at
Wed Jun 11 15:58:38 CST 2014
.
/user/hadoop/fsck-test: CORRUPT blockpool BP-654596295-10.37.7.84-1402466764642
block blk_1073741825
/user/hadoop/fsck-test: MISSING 1 blocks of total size 1048576 B.Status: CORRUPT
Total size: 4104304 B
Total dirs: 1
Total files: 1
Total symlinks: 0
Total blocks (validated): 4 (avg. block size 1026076 B)
********************************
CORRUPT FILES: 1
MISSING BLOCKS: 1
MISSING SIZE: 1048576 B
CORRUPT BLOCKS: 1
********************************
Minimally replicated blocks: 3 (75.0 %)
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: 0.75
Corrupt blocks: 1
Missing replicas: 0 (0.0 %)
Number of data-nodes: 1
Number of racks: 1
FSCK ended at Wed Jun 11 15:58:38 CST 2014 in 1 milliseconds
The filesystem under path '/user/hadoop' is CORRUPT
{code}
5. Run fsck -move to move the corrupted file to /lost+found and the error
message in the namenode log:
{code}
2014-06-11 15:48:16,686 INFO org.apache.hadoop.hdfs.server.namenode.NameNode:
FSCK started by hadoop (auth:SIMPLE) from /127.0.0.1 for path /user/hadoop at
Wed Jun 11 15:48:16 CST 2014
2014-06-11 15:48:16,894 INFO org.apache.hadoop.hdfs.server.namenode.FSEditLog:
Number of transactions: 35 Total time for transactions(ms): 9 Number of
transactions batched in Syncs: 0 Number of syncs: 25 SyncTimes(ms): 73
2014-06-11 15:48:16,991 ERROR org.apache.hadoop.hdfs.server.namenode.NameNode:
Error reading block
java.io.IOException: Expected empty end-of-read packet! Header: PacketHeader
with packetLen=66048 header data: offsetInBlock: 65536
seqno: 1
lastPacketInBlock: false
dataLen: 65536
at
org.apache.hadoop.hdfs.RemoteBlockReader2.readTrailingEmptyPacket(RemoteBlockReader2.java:259)
at
org.apache.hadoop.hdfs.RemoteBlockReader2.readNextPacket(RemoteBlockReader2.java:220)
at
org.apache.hadoop.hdfs.RemoteBlockReader2.read(RemoteBlockReader2.java:138)
at
org.apache.hadoop.hdfs.server.namenode.NamenodeFsck.copyBlock(NamenodeFsck.java:649)
at
org.apache.hadoop.hdfs.server.namenode.NamenodeFsck.copyBlocksToLostFound(NamenodeFsck.java:543)
at
org.apache.hadoop.hdfs.server.namenode.NamenodeFsck.check(NamenodeFsck.java:460)
at
org.apache.hadoop.hdfs.server.namenode.NamenodeFsck.check(NamenodeFsck.java:324)
at
org.apache.hadoop.hdfs.server.namenode.NamenodeFsck.fsck(NamenodeFsck.java:233)
at
org.apache.hadoop.hdfs.server.namenode.FsckServlet$1.run(FsckServlet.java:67)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1548)
at
org.apache.hadoop.hdfs.server.namenode.FsckServlet.doGet(FsckServlet.java:58)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at
org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1221)
at
org.apache.hadoop.http.HttpServer2$QuotingInputFilter.doFilter(HttpServer2.java:1192)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
at org.apache.hadoop.http.NoCacheFilter.doFilter(NoCacheFilter.java:45)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
at org.apache.hadoop.http.NoCacheFilter.doFilter(NoCacheFilter.java:45)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
at
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:399)
at
org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at
org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
at
org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:450)
at
org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230)
at
org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:326)
at
org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
at
org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:928)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:549)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
at
org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:410)
at
org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
2014-06-11 15:48:16,992 ERROR org.apache.hadoop.hdfs.server.namenode.NameNode:
Fsck: could not copy block
BP-654596295-10.37.7.84-1402466764642:blk_1073741825_1001 to
/lost+found/user/hadoop/fsck-test
java.lang.Exception: Could not copy block data for
BP-654596295-10.37.7.84-1402466764642:blk_1073741825_1001
at
org.apache.hadoop.hdfs.server.namenode.NamenodeFsck.copyBlock(NamenodeFsck.java:664)
at
org.apache.hadoop.hdfs.server.namenode.NamenodeFsck.copyBlocksToLostFound(NamenodeFsck.java:543)
at
org.apache.hadoop.hdfs.server.namenode.NamenodeFsck.check(NamenodeFsck.java:460)
at
org.apache.hadoop.hdfs.server.namenode.NamenodeFsck.check(NamenodeFsck.java:324)
at
org.apache.hadoop.hdfs.server.namenode.NamenodeFsck.fsck(NamenodeFsck.java:233)
at
org.apache.hadoop.hdfs.server.namenode.FsckServlet$1.run(FsckServlet.java:67)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1548)
at
org.apache.hadoop.hdfs.server.namenode.FsckServlet.doGet(FsckServlet.java:58)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at
org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1221)
at
org.apache.hadoop.http.HttpServer2$QuotingInputFilter.doFilter(HttpServer2.java:1192)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
at org.apache.hadoop.http.NoCacheFilter.doFilter(NoCacheFilter.java:45)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
at org.apache.hadoop.http.NoCacheFilter.doFilter(NoCacheFilter.java:45)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
at
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:399)
at
org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at
org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
at
org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:450)
at
org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230)
at
org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:326)
at
org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
at
org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:928)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:549)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
at
org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:410)
at
org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
2014-06-11 15:48:16,994 INFO org.apache.hadoop.hdfs.StateChange: DIR*
completeFile: /lost+found/user/hadoop/fsck-test/0 is closed by
DFSClient_NONMAPREDUCE_-774755866_14
{code}
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