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From "Sebastian Toader (JIRA)" <>
Subject [jira] [Updated] (AMBARI-21902) Ambari is setting "" to hbase hostname, instead it should set the zookeeper quorum.
Date Wed, 13 Sep 2017 09:46:03 GMT


Sebastian Toader updated AMBARI-21902:
    Resolution: Fixed
        Status: Resolved  (was: Patch Available)

> Ambari is setting "" to hbase hostname, instead it should
set the zookeeper quorum.
> ---------------------------------------------------------------------------------------------------------------
>                 Key: AMBARI-21902
>                 URL:
>             Project: Ambari
>          Issue Type: Bug
>          Components: ambari-server
>    Affects Versions: 2.5.0, 2.6.0
>            Reporter: Ayub Pathan
>            Assignee: Ayub Pathan
>            Priority: Critical
>             Fix For: 2.6.0
>         Attachments: AMBARI-21902.patch, AMBARI-21902.v1.patch
> Atlas is connecting to a host where zookeeper is not installed, thinking that there is
zookeeper instance running on that host. Ambari is setting this property ""
to hbase hostname, instead it should set to zookeeper quorum. Since Hbase is managed by zookeeper,
this setting should be fine.
> *Please note, this issue will not be seen if Hbase master and zookeeper are hosted on
the same node.*
> To explain in detail:
> *  There is a configuration property( in Atlas which defines
where Hbase storage is installed.
> * This property is managed by Ambari and it is set to the hostname where HBase is installed.
> * When Atlas starts, it initializes the connection with HBase using HBaseStoreManger
class, which overrides “hbase.zookeeper.quorum” property value with “”
property value.
> * If there is zookeeper node running on the same host as HBase host, then the HBase initialization
will succeed, everything is fine.
> *  If there is no zookeeper node is running on the same host as HBase, then the above
zookeeper connection issue can be observed, which will eventually result in Atlas failure.
> To fix this, “” config property in Atlas(managed by Ambari)
can be set to the cluster zookeeper quorum value. Since HBase is managed by Zookeeper, this
setting should be fine.
> Fix can be done here:
> {noformat}
> 2017-09-06 23:17:20,518 INFO  - [main:] ~ Instantiated HBase compatibility layer supporting
runtime HBase version com.thinkaurelius.titan.diskstorage.hbase.HBaseCompat1_1
> 2017-09-06 23:17:20,560 INFO  - [main:] ~ Copied host list from
to hbase.zookeeper.quorum: (HBaseStoreManager:320)
> 2017-09-06 23:17:20,666 INFO  - [main:] ~ Process identifier=hconnection-0x80b122b connecting
to ZooKeeper (RecoverableZooKeeper:120)
> {noformat}

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