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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-6520) hdfs fsck passes invalid length value when creating BlockReader
Date Wed, 06 Apr 2016 19:30:26 GMT

    [ https://issues.apache.org/jira/browse/HDFS-6520?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15228940#comment-15228940
] 

Hudson commented on HDFS-6520:
------------------------------

FAILURE: Integrated in Hadoop-trunk-Commit #9569 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/9569/])
HDFS-6520. hdfs fsck passes invalid length value when creating (cmccabe: rev 188f65287d5b2f26a8862c88198f83ac59035016)
* hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/blockmanagement/TestBlockTokenWithDFS.java
* hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/BlockReaderFactory.java
* hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestDataNodeVolumeFailure.java
* hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestFsck.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NamenodeFsck.java


> hdfs fsck passes invalid length value when creating BlockReader
> ---------------------------------------------------------------
>
>                 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
>            Assignee: Xiao Chen
>             Fix For: 2.8.0
>
>         Attachments: HDFS-6520-partial.001.patch, HDFS-6520.01.patch, HDFS-6520.02.patch,
john.test.patch
>
>
> 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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