[jira] [Commented] (YARN-3752) TestRMFailover fails due to intermittent UnknownHostException
[ https://issues.apache.org/jira/browse/YARN-3752?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14567762#comment-14567762 ] Masatake Iwasaki commented on YARN-3752: My /etc/hosts works for pseudo distributed cluster and unit tests for NameNode-HA in HDFS. Hostnames are successfully resolved at first in TestRMFailover too at first. {noformat} java.net.ConnectException: Call From centos7/127.0.0.1 to 0.0.0.0:28031 failed on connection exception: java.net.ConnectException: Connection refused; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused ... java.io.EOFException: End of File Exception between local host is: centos7/127.0.0.1; destination host is: 0.0.0.0:18031; : java.io.EOFException; For more details see: http://wiki.apache.org/hadoop/EOFException ... {noformat} Client fails to create connection due to UnknownHostException while client retries to connect to next RM after failover. {noformat} java.io.IOException: java.util.concurrent.ExecutionException: java.net.UnknownHostException: Invalid host name: local host is: (unknown); destination host is: centos7:28032; java.net.UnknownHostException; For more details see: http://wiki.apache.org/hadoop/UnknownHost at org.apache.hadoop.ipc.Client.getConnection(Client.java:1487) at org.apache.hadoop.ipc.Client.call(Client.java:1410) at org.apache.hadoop.ipc.Client.call(Client.java:1371) at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:229) at com.sun.proxy.$Proxy15.getApplications(Unknown Source) at org.apache.hadoop.yarn.api.impl.pb.client.ApplicationClientProtocolPBClientImpl.getApplications(ApplicationClientProtocolPBClientImpl.java:251) 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 org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:186) at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:101) at com.sun.proxy.$Proxy16.getApplications(Unknown Source) at org.apache.hadoop.yarn.client.api.impl.YarnClientImpl.getApplications(YarnClientImpl.java:484) at org.apache.hadoop.yarn.client.api.impl.YarnClientImpl.getApplications(YarnClientImpl.java:461) at org.apache.hadoop.yarn.client.TestRMFailover.verifyClientConnection(TestRMFailover.java:119) at org.apache.hadoop.yarn.client.TestRMFailover.verifyConnections(TestRMFailover.java:133) at org.apache.hadoop.yarn.client.TestRMFailover.testExplicitFailover(TestRMFailover.java:168 . Caused by: java.net.UnknownHostException: Invalid host name: local host is: (unknown); destination host is: centos7:28032; java.net.UnknownHostException; For more details see: http://wiki.apache.org/hadoop/UnknownHost at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:526) at org.apache.hadoop.net.NetUtils.wrapWithMessage(NetUtils.java:792) at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:744) at org.apache.hadoop.ipc.Client$Connection.init(Client.java:408) at org.apache.hadoop.ipc.Client$1.call(Client.java:1483) at org.apache.hadoop.ipc.Client$1.call(Client.java:1480) at com.google.common.cache.LocalCache$LocalManualCache$1.load(LocalCache.java:4767) at com.google.common.cache.LocalCache$LoadingValueReference.loadFuture(LocalCache.java:3568) at com.google.common.cache.LocalCache$Segment.loadSync(LocalCache.java:2350) ... 49 more {noformat} It may be timing/environment issue because the test seems to succeed in QA tests. TestRMFailover fails due to intermittent UnknownHostException - Key: YARN-3752 URL: https://issues.apache.org/jira/browse/YARN-3752 Project: Hadoop YARN Issue Type: Bug Components: test Reporter: Masatake Iwasaki Assignee: Masatake Iwasaki Priority: Minor Client fails to create connection due to UnknownHostException while client retries to connect to next RM after failover in unit test. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Commented] (YARN-3752) TestRMFailover fails due to intermittent UnknownHostException
[ https://issues.apache.org/jira/browse/YARN-3752?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14567763#comment-14567763 ] Masatake Iwasaki commented on YARN-3752: While I am doing trial-and-error, using 127.0.0.1 instead of 0.0.0.0 for server addresses fixed this. TestRMFailover fails due to intermittent UnknownHostException - Key: YARN-3752 URL: https://issues.apache.org/jira/browse/YARN-3752 Project: Hadoop YARN Issue Type: Bug Components: test Reporter: Masatake Iwasaki Assignee: Masatake Iwasaki Priority: Minor Client fails to create connection due to UnknownHostException while client retries to connect to next RM after failover in unit test. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Commented] (YARN-3752) TestRMFailover fails due to intermittent UnknownHostException
[ https://issues.apache.org/jira/browse/YARN-3752?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14567775#comment-14567775 ] Masatake Iwasaki commented on YARN-3752: I don't know the exact reason yet but using independent Configuration instances for each RM in MiniYARNCluster as YARN-3749 do also worked. TestRMFailover fails due to intermittent UnknownHostException - Key: YARN-3752 URL: https://issues.apache.org/jira/browse/YARN-3752 Project: Hadoop YARN Issue Type: Bug Components: test Reporter: Masatake Iwasaki Assignee: Masatake Iwasaki Priority: Minor Client fails to create connection due to UnknownHostException while client retries to connect to next RM after failover in unit test. -- This message was sent by Atlassian JIRA (v6.3.4#6332)