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From "Andrew Wang (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HDFS-8662) In failover state, HDFS commands fail on "Retrying connect to server:<master1>"
Date Tue, 18 Oct 2016 00:32:58 GMT

     [ https://issues.apache.org/jira/browse/HDFS-8662?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Andrew Wang resolved HDFS-8662.
-------------------------------
    Resolution: Not A Problem

Resolving per Nicholas' comment, this looks like it's working as intended.

> In failover state, HDFS commands fail on "Retrying connect to server:<master1>"
> -------------------------------------------------------------------------------
>
>                 Key: HDFS-8662
>                 URL: https://issues.apache.org/jira/browse/HDFS-8662
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: ha
>    Affects Versions: 2.3.0
>         Environment: 3-master cluster with 3 data nodes and 1 edge node.
>            Reporter: Lakshmi VS
>            Priority: Blocker
>         Attachments: hadoop-hdfs-journalnode-infinity2.log, hadoop-hdfs-namenode-infinity2.log
>
>
> Steps (on a 3M cluster):
> 1. Poweroff master1.
> 2. Failover to master2.
> 3. On HDFS commands, there are messages indicating failed attempt to connect to master1,
though namenode is active and running on master2.
> {code}
> infinity2:~ # su - hdfs -c "hdfs haadmin -getServiceState nn2"
> active
> infinity2:~ # su hdfs -c "hdfs dfs -ls /"
> 15/06/24 15:28:15 INFO ipc.Client: Retrying connect to server: infinity1.labs.teradata.com/39.0.24.1:8020.
Already tried 0 time(s); retry policy is RetryPolicy[MultipleLinearRandomRetry[6x10000ms,
10x60000ms], TryOnceThenFail]
> 15/06/24 15:28:31 INFO ipc.Client: Retrying connect to server: infinity1.labs.teradata.com/39.0.24.1:8020.
Already tried 1 time(s); retry policy is RetryPolicy[MultipleLinearRandomRetry[6x10000ms,
10x60000ms], TryOnceThenFail]
> Found 7 items
> drwxrwxrwx   - yarn   hadoop          0 2015-06-24 14:42 /app-logs
> drwxr-xr-x   - hdfs   hdfs            0 2015-06-24 06:16 /apps
> drwxr-xr-x   - hdfs   hdfs            0 2015-06-24 06:14 /hdp
> drwxr-xr-x   - mapred hdfs            0 2015-06-24 06:15 /mapred
> drwxrwxrwx   - mapred hadoop          0 2015-06-24 06:15 /mr-history
> drwxrwxrwx   - hdfs   hdfs            0 2015-06-24 06:16 /tmp
> drwxr-xr-x   - hdfs   hdfs            0 2015-06-24 06:17 /user
> infinity2:~ # ps -fu hdfs
> UID        PID  PPID  C STIME TTY          TIME CMD
> hdfs     16318     1  0 06:25 ?        00:00:40 /opt/teradata/jvm64/jdk8/bin/java -Dproc_journalnode
-Xmx4096m -Dhdp.version=2.3.0.0-2462 -Djava.net.prefe
> hdfs     16859     1  0 06:26 ?        00:00:29 /opt/teradata/jvm64/jdk8/bin/java -Dproc_zkfc
-Xmx4096m -Dhdp.version=2.3.0.0-2462 -Djava.net.preferIPv4St
> hdfs     17791     1  0 06:26 ?        00:02:34 /opt/teradata/jvm64/jdk8/bin/java -Dproc_namenode
-Xmx4096m -Dhdp.version=2.3.0.0-2462 -Djava.net.preferIP
> infinity2:~ #
> {code}



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