[ https://issues.apache.org/jira/browse/HDFS-7191?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Haohui Mai resolved HDFS-7191. ------------------------------ Resolution: Duplicate HDFS-7279 should fix this problem. > WebHDFS prematurely closes connections under high concurrent loads > ------------------------------------------------------------------ > > Key: HDFS-7191 > URL: https://issues.apache.org/jira/browse/HDFS-7191 > Project: Hadoop HDFS > Issue Type: Bug > Reporter: Haohui Mai > Priority: Critical > > We're seeing the DN prematurely closes APPEND connections: > {noformat] > 2014-09-22 23:53:12,721 WARN > org.apache.hadoop.hdfs.web.resources.ExceptionHandler: INTERNAL_SERVER_ERROR > java.nio.channels.CancelledKeyException > at sun.nio.ch.SelectionKeyImpl.ensureValid(SelectionKeyImpl.java:55) > at sun.nio.ch.SelectionKeyImpl.interestOps(SelectionKeyImpl.java:59) > at > org.mortbay.io.nio.SelectChannelEndPoint.updateKey(SelectChannelEndPoint.java:325) > at > org.mortbay.io.nio.SelectChannelEndPoint.blockReadable(SelectChannelEndPoint.java:242) > at > org.mortbay.jetty.HttpParser$Input.blockForContent(HttpParser.java:1169) > at org.mortbay.jetty.HttpParser$Input.read(HttpParser.java:1122) > at java.io.InputStream.read(InputStream.java:85) > at org.apache.hadoop.io.IOUtils.copyBytes(IOUtils.java:84) > at > org.apache.hadoop.hdfs.server.datanode.web.resources.DatanodeWebHdfsMethods.put(DatanodeWebHdfsMethods.java:239) > at > org.apache.hadoop.hdfs.server.datanode.web.resources.DatanodeWebHdfsMethods.access$000(DatanodeWebHdfsMethods.java:87) > 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:396) > at > org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1548) > at > org.apache.hadoop.hdfs.server.datanode.web.resources.DatanodeWebHdfsMethods.put(DatanodeWebHdfsMethods.java:202) > {noformat} -- This message was sent by Atlassian JIRA (v6.3.4#6332)