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https://issues.apache.org/jira/browse/ACCUMULO-4506?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15634338#comment-15634338
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Josh Elser commented on ACCUMULO-4506:
--------------------------------------
Cool. So we at least know that ZK and the Master's memory are consistent.
That's good. It seems like it might be related to the DistributedWorkQueue
(which I didn't write, smile).
Check what's inside of
{{/accumulo/43d2ac5e-0df0-4727-aba9-05bae9e908e7/replication/workqueue/locks}}.
There should be a corresponding node in there with the same name which
corresponds to a TabletServer performing the work. There should be an ephemeral
owner of that lock node.
I'd have to dig more into the implementation of the DWQ. I'm a bit fuzzy on the
inner workings. [~kturner] or [~ecn] might remember more.
> Some in-progress files for replication never replicate
> -------------------------------------------------------
>
> Key: ACCUMULO-4506
> URL: https://issues.apache.org/jira/browse/ACCUMULO-4506
> Project: Accumulo
> Issue Type: Bug
> Components: replication
> Affects Versions: 1.7.2
> Reporter: Adam J Shook
>
> We're seeing an issue with replication where two files have been in-progress
> for a long time and based on the logs are not going to be replicated. The
> metadata from the {{accumulo.replication}} table looks a little funky, with a
> very large {{begin}} value.
> *Logs*
> {noformat}
> 2016-11-02 19:52:50,900 [replication.DistributedWorkQueueWorkAssigner] DEBUG:
> Not queueing work for
> hdfs://host:9000/accumulo/wal/host+31032/9f038f64-4252-44a0-bfd0-99d4a316b397
> to Remote Name: peer_instance Remote identifier: 5h Source Table ID: k
> because [begin: 9223372036854775807 end: 0 infiniteEnd: true closed: true
> createdTime: 1477314365827] doesn't need replication
> 2016-11-02 19:53:08,900 [replication.DistributedWorkQueueWorkAssigner] DEBUG:
> Not queueing work for
> hdfs://host:9000/accumulo/wal/host+31368/ae4b03ec-159b-44e8-9a88-ccf7fa849c19
> to Remote Name: peer_instance Remote identifier: 5i Source Table ID: l
> because [begin: 9223372036854775807 end: 0 infiniteEnd: true closed: true
> createdTime: 1477052816174] doesn't need replication
> {noformat}
> *Replication table*
> {noformat}
> scan -r
> hdfs://host:9000/accumulo/wal/host+31032/9f038f64-4252-44a0-bfd0-99d4a316b397
> -t accumulo.replication
> hdfs://host:9000/accumulo/wal/host+31032/9f038f64-4252-44a0-bfd0-99d4a316b397
> repl:j [] [begin: 0 end: 0 infiniteEnd: true closed: true createdTime:
> 1477314369633]
> hdfs://host:9000/accumulo/wal/host+31032/9f038f64-4252-44a0-bfd0-99d4a316b397
> repl:k [] [begin: 9223372036854775807 end: 0 infiniteEnd: true closed:
> true createdTime: 1477314365827]
> hdfs://host:9000/accumulo/wal/host+31032/9f038f64-4252-44a0-bfd0-99d4a316b397
> repl:l [] [begin: 9223372036854775807 end: 0 infiniteEnd: true closed:
> true createdTime: 1477314365707]
> hdfs://host:9000/accumulo/wal/host+31032/9f038f64-4252-44a0-bfd0-99d4a316b397
> work:\x01\x00\x00\x00\x17peer_instance\x01\x00\x00\x00\x025g\x01\x00\x00\x00\x01j
> [] [begin: 0 end: 0 infiniteEnd: true closed: true createdTime:
> 1477314369633]
> hdfs://host:9000/accumulo/wal/host+31032/9f038f64-4252-44a0-bfd0-99d4a316b397
> work:\x01\x00\x00\x00\x17peer_instance\x01\x00\x00\x00\x025h\x01\x00\x00\x00\x01k
> [] [begin: 9223372036854775807 end: 0 infiniteEnd: true closed: true
> createdTime: 1477314365827]
> hdfs://host:9000/accumulo/wal/host+31032/9f038f64-4252-44a0-bfd0-99d4a316b397
> work:\x01\x00\x00\x00\x17peer_instance\x01\x00\x00\x00\x025i\x01\x00\x00\x00\x01l
> [] [begin: 9223372036854775807 end: 0 infiniteEnd: true closed: true
> createdTime: 1477314365707]
> scan -r
> hdfs://host:9000/accumulo/wal/host+31368/ae4b03ec-159b-44e8-9a88-ccf7fa849c19
> -t accumulo.replication
> hdfs://host:9000/accumulo/wal/host+31368/ae4b03ec-159b-44e8-9a88-ccf7fa849c19
> repl:j [] [begin: 9223372036854775807 end: 0 infiniteEnd: true closed:
> true createdTime: 1477052819752]
> hdfs://host:9000/accumulo/wal/host+31368/ae4b03ec-159b-44e8-9a88-ccf7fa849c19
> repl:k [] [begin: 0 end: 0 infiniteEnd: true closed: true createdTime:
> 1477052816238]
> hdfs://host:9000/accumulo/wal/host+31368/ae4b03ec-159b-44e8-9a88-ccf7fa849c19
> repl:l [] [begin: 9223372036854775807 end: 0 infiniteEnd: true closed:
> true createdTime: 1477052816174]
> hdfs://host:9000/accumulo/wal/host+31368/ae4b03ec-159b-44e8-9a88-ccf7fa849c19
> work:\x01\x00\x00\x00\x17peer_instance\x01\x00\x00\x00\x025g\x01\x00\x00\x00\x01j
> [] [begin: 9223372036854775807 end: 0 infiniteEnd: true closed: true
> createdTime: 1477052819752]
> hdfs://host:9000/accumulo/wal/host+31368/ae4b03ec-159b-44e8-9a88-ccf7fa849c19
> work:\x01\x00\x00\x00\x17peer_instance\x01\x00\x00\x00\x025h\x01\x00\x00\x00\x01k
> [] [begin: 0 end: 0 infiniteEnd: true closed: true createdTime:
> 1477052816238]
> hdfs://host:9000/accumulo/wal/host+31368/ae4b03ec-159b-44e8-9a88-ccf7fa849c19
> work:\x01\x00\x00\x00\x17peer_instance\x01\x00\x00\x00\x025i\x01\x00\x00\x00\x01l
> [] [begin: 9223372036854775807 end: 0 infiniteEnd: true closed: true
> createdTime: 1477052816174]
> {noformat}
> *HDFS*
> {noformat}
> hdfs dfs -ls
> hdfs://host:9000/accumulo/wal/host+31032/9f038f64-4252-44a0-bfd0-99d4a316b397
> hdfs://host:9000/accumulo/wal/host+31368/ae4b03ec-159b-44e8-9a88-ccf7fa849c19
> -rwxr-xr-x 3 ubuntu supergroup 1117650900 2016-10-24 13:09
> hdfs://host:9000/accumulo/wal/host+31032/9f038f64-4252-44a0-bfd0-99d4a316b397
> -rwxr-xr-x 3 ubuntu supergroup 1171968390 2016-10-21 12:31
> hdfs://host:9000/accumulo/wal/host+31368/ae4b03ec-159b-44e8-9a88-ccf7fa849c19
> {noformat}
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