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From "Esteban Gutierrez (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-16450) Shell tool to dump replication queues
Date Tue, 23 Aug 2016 02:13:20 GMT

    [ https://issues.apache.org/jira/browse/HBASE-16450?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15431991#comment-15431991
] 

Esteban Gutierrez commented on HBASE-16450:
-------------------------------------------

Two examples from the tool: 

1. no distributed (just polls zk)
{code}
2016-08-22 19:03:23,741 INFO  [main] regionserver.DumpReplicationQueues: Replicated Tables:
[{replicationType=1, columnFamilyName=c, tableName=x}]
Dumping replication peers and configurations:
Peer: nothing
    State: ENABLED
    Cluster Name: clusterKey=localhost:2181:/hbase,replicationEndpointImpl=null,
    Peer Table CFs: null

Dumping replication znodes via ZooKeeper:
/hbase/replication:
/hbase/replication/peers:
/hbase/replication/peers/nothing: localhost:2181:/hbase
/hbase/replication/peers/nothing/peer-state: ENABLED
/hbase/replication/rs:
/hbase/replication/rs/172.16.1.251,51236,1471895993290:
/hbase/replication/rs/172.16.1.251,51236,1471895993290/nothing:
/hbase/replication/rs/172.16.1.251,51236,1471895993290/nothing/172.16.1.251%2C51236%2C1471895993290.1471917599568:
{code}

2. distributed 
{code}
2016-08-22 19:12:38,789 INFO  [main] regionserver.DumpReplicationQueues: Replicated Tables:
[{replicationType=1, columnFamilyName=c, tableName=x}]
Dumping replication peers and configurations:
Peer: nothing
    State: ENABLED
    Cluster Name: clusterKey=localhost:2181:/hbase,replicationEndpointImpl=null,
    Peer Table CFs: null

2016-08-22 19:12:38,793 INFO  [main] regionserver.DumpReplicationQueues: Found [--distributed],
will poll each RegionServer.
2016-08-22 19:12:38,826 INFO  [main] replication.ReplicationPeersZKImpl: Added new peer cluster=localhost:2181:/hbase
Dumping replication queue info for RegionServer: [172.16.1.251,51236,1471895993290]
    PeerID: nothing
    Recovered: false
    No dead RegionServers found in this queue.
    Was deleted: false
    Number of WALs in replication queue: 1
    Replication position for 172.16.1.251%2C51236%2C1471895993290.1471917599568: 0 (not started
or nothing to replicate)

{code}


> Shell tool to dump replication queues 
> --------------------------------------
>
>                 Key: HBASE-16450
>                 URL: https://issues.apache.org/jira/browse/HBASE-16450
>             Project: HBase
>          Issue Type: Improvement
>          Components: Operability, Replication
>    Affects Versions: 2.0.0, 1.3.0, 1.1.5, 1.2.2
>            Reporter: Esteban Gutierrez
>            Assignee: Esteban Gutierrez
>         Attachments: HBASE-16450.branch-1.001.patch, HBASE-16450.master.001.patch, HBASE-16450.master.002.patch,
HBASE-16450.master.003.patch
>
>
> Currently there is no way to dump list of the configured queues and the replication queues
when replication is enabled. Unfortunately the HBase master only offers an option to dump
the whole content of the znodes but not details on the queues being processed on each RS.



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