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https://issues.apache.org/jira/browse/HADOOP-1632?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hairong Kuang updated HADOOP-1632:
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Attachment: sort.patch
Here is a simple fix.
> IllegalArgumentException in fsck
> --------------------------------
>
> Key: HADOOP-1632
> URL: https://issues.apache.org/jira/browse/HADOOP-1632
> Project: Hadoop
> Issue Type: Bug
> Components: dfs
> Affects Versions: 0.14.0
> Reporter: Konstantin Shvachko
> Assignee: Hairong Kuang
> Priority: Blocker
> Fix For: 0.14.0
>
> Attachments: sort.patch
>
>
> The easy way to reproduce this bug is to run fsck when only the name-node is
> up.
> The problem is that NetworkTopology.pseudoSortByDistance() is trying to get
> nextInt() to the length of
> the array of node locations, which is empty in this case, and nextInt()
> throws an exception when the argument is not positive.
> java.lang.IllegalArgumentException: n must be positive
> at java.util.Random.nextInt(Random.java:248)
> at
> org.apache.hadoop.net.NetworkTopology.pseudoSortByDistance(NetworkTopology.java:642)
> at
> org.apache.hadoop.dfs.FSNamesystem.getBlockLocations(FSNamesystem.java:556)
> at org.apache.hadoop.dfs.NameNode.getBlockLocations(NameNode.java:280)
> at org.apache.hadoop.dfs.NamenodeFsck.check(NamenodeFsck.java:154)
> at org.apache.hadoop.dfs.NamenodeFsck.fsck(NamenodeFsck.java:123)
> at org.apache.hadoop.dfs.FsckServlet.doGet(FsckServlet.java:49)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
> at
> org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:427)
> at
> org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicationHandler.java:475)
> at
> org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:567)
> at org.mortbay.http.HttpContext.handle(HttpContext.java:1565)
> at
> org.mortbay.jetty.servlet.WebApplicationContext.handle(WebApplicationContext.java:635)
> at org.mortbay.http.HttpContext.handle(HttpContext.java:1517)
> at org.mortbay.http.HttpServer.service(HttpServer.java:954)
> at org.mortbay.http.HttpConnection.service(HttpConnection.java:814)
> at org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:981)
> at org.mortbay.http.HttpConnection.handle(HttpConnection.java:831)
> at
> org.mortbay.http.SocketListener.handleConnection(SocketListener.java:244)
> at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:357)
> at org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:534)
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