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https://issues.apache.org/jira/browse/HDFS-7000?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14122387#comment-14122387
]
Yongjun Zhang commented on HDFS-7000:
-------------------------------------
Submit a quick patch to issue the following message:
{code}
2014-09-04 21:17:54,988 ERROR util.Shell (Shell.java:runCommand(524)) - Caught
java.lang.OutOfMemoryError: unable to create new native thread. One possible
reason is that ulimit setting of 'max user processes' is too low. If so, do
'ulimit -u <largerNum>' and try again.
{code}
Thanks for reviewing.
> TestWebHdfsFileSystemContract failed with OutOfMemoryError but the real
> reason is not
> -------------------------------------------------------------------------------------
>
> Key: HDFS-7000
> URL: https://issues.apache.org/jira/browse/HDFS-7000
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Yongjun Zhang
> Assignee: Yongjun Zhang
> Attachments: HDFS-7000.001.patch
>
>
> TestWebHdfsFileSystemContract failed with the following error. But the real
> reason is not. Instead, it's because of "max user processes" of ulimit
> setting is too low. Need a more informative error message here.
> {code}
> 2014-09-04 20:09:08,396 ERROR mortbay.log (Slf4jLog.java:warn(87)) -
> /webhdfs/v1/test/testSeek/zero
> java.lang.OutOfMemoryError: unable to create new native thread
> at java.lang.Thread.start0(Native Method)
> at java.lang.Thread.start(Thread.java:693)
> at org.apache.hadoop.hdfs.LeaseRenewer.put(LeaseRenewer.java:320)
> at org.apache.hadoop.hdfs.DFSClient.beginFileLease(DFSClient.java:789)
> at org.apache.hadoop.hdfs.DFSClient.create(DFSClient.java:1605)
> at org.apache.hadoop.hdfs.DFSClient.create(DFSClient.java:1526)
> at
> org.apache.hadoop.hdfs.server.datanode.web.resources.DatanodeWebHdfsMethods.put(DatanodeWebHdfsMethods.java:234)
> at
> org.apache.hadoop.hdfs.server.datanode.web.resources.DatanodeWebHdfsMethods.access$000(DatanodeWebHdfsMethods.java:86)
> at
> org.apache.hadoop.hdfs.server.datanode.web.resources.DatanodeWebHdfsMethods$1.run(DatanodeWebHdfsMethods.java:205)
> at
> org.apache.hadoop.hdfs.server.datanode.web.resources.DatanodeWebHdfsMethods$1.run(DatanodeWebHdfsMethods.java:202)
> 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:1626)
> at
> org.apache.hadoop.hdfs.server.datanode.web.resources.DatanodeWebHdfsMethods.put(DatanodeWebHdfsMethods.java:202)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:606)
> at
> com.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(JavaMethodInvokerFactory.java:60)
> at
> com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$ResponseOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:205)
> at
> com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75)
> at
> com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:288)
> at
> com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
> at
> com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108)
> at
> com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
> at
> com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84)
> at
> com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1469)
> at
> com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1400)
> at
> com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1349)
> at
> com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1339)
> at
> com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:416)
> at
> com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:537)
> at
> com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:699)
> 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:1203)
> 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.messageComplete(HttpConnection.java:959)
> at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:792)
> 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)
> {code}
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