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From "Avery Ching (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (GIRAPH-356) Improve ZooKeeper issues
Date Fri, 05 Oct 2012 20:46:02 GMT

     [ https://issues.apache.org/jira/browse/GIRAPH-356?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Avery Ching updated GIRAPH-356:
-------------------------------

    Summary: Improve ZooKeeper issues  (was: Help debug ZooKeeper issues)
    
> Improve ZooKeeper issues
> ------------------------
>
>                 Key: GIRAPH-356
>                 URL: https://issues.apache.org/jira/browse/GIRAPH-356
>             Project: Giraph
>          Issue Type: Improvement
>            Reporter: Avery Ching
>            Assignee: Avery Ching
>         Attachments: GIRAPH-356.2.patch, GIRAPH-356.patch
>
>
> Currently, if the ZooKeeper process fails, we have little information on why and what
happened.  This patch addresses this by keeping the last 100 log lines and dumps when the
map fails under a RuntimeException.
> Here is an example of a master task failure when there is an invalid JVM argument passed
to ZooKeeper.  The error is much for obvious now.
> 2012-10-04 15:05:28,916 WARN org.apache.giraph.zk.ZooKeeperManager: logZooKeeperOutput:
Dumping up to last 100 lines of the ZooKeeper process STDOUT and STDERR.
> 2012-10-04 15:05:28,916 WARN org.apache.giraph.zk.ZooKeeperManager$StreamCollector: Unrecognized
option: -BadOpt
> 2012-10-04 15:05:28,916 WARN org.apache.giraph.zk.ZooKeeperManager$StreamCollector: Could
not create the Java virtual machine.
> 2012-10-04 15:05:28,919 INFO org.apache.hadoop.mapred.TaskLogsTruncater: Initializing
logs' truncater with mapRetainSize=-1 and reduceRetainSize=-1
> 2012-10-04 15:05:28,959 WARN org.apache.hadoop.mapred.Child: Error running child
> java.lang.IllegalStateException: run: Caught an unrecoverable exception onlineZooKeeperServers:
Failed to connect in 5 tries!
>                                  at org.apache.giraph.graph.GraphMapper.run(GraphMapper.java:591)
>                                  at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:763)
>                                  at org.apache.hadoop.mapred.MapTask.run(MapTask.java:369)
>                                  at org.apache.hadoop.mapred.Child$4.run(Child.java:259)
>                                  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:1059)
>                                  at org.apache.hadoop.mapred.Child.main(Child.java:253)
> Caused by: java.lang.IllegalStateException: onlineZooKeeperServers: Failed to connect
in 5 tries!
>        at org.apache.giraph.zk.ZooKeeperManager.onlineZooKeeperServers(ZooKeeperManager.java:721)
>        at org.apache.giraph.graph.GraphMapper.setup(GraphMapper.java:328)
>        at org.apache.giraph.graph.GraphMapper.run(GraphMapper.java:573)
>        ... 7 more
> 2012-10-04 15:05:28,963 INFO org.apache.hadoop.mapred.Task: Runnning cleanup for the
task

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