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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-15390) Unnecessary MetaCache evictions cause elevated number of requests to meta
Date Thu, 17 Mar 2016 06:19:33 GMT

    [ https://issues.apache.org/jira/browse/HBASE-15390?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15198826#comment-15198826
] 

Hudson commented on HBASE-15390:
--------------------------------

SUCCESS: Integrated in HBase-1.3-IT #557 (See [https://builds.apache.org/job/HBase-1.3-IT/557/])
HBASE-15390 Unnecessary MetaCache evictions cause elevated number of (antonov: rev 94d576025fd158dae03dd6a6b50a62483b0f04e0)
* hbase-client/src/main/java/org/apache/hadoop/hbase/client/AsyncProcess.java
* hbase-client/src/main/java/org/apache/hadoop/hbase/client/MetaCache.java
* hbase-client/src/main/java/org/apache/hadoop/hbase/client/ConnectionManager.java
* hbase-client/src/main/java/org/apache/hadoop/hbase/exceptions/ClientExceptionsUtil.java
* hbase-client/src/main/java/org/apache/hadoop/hbase/client/MetricsConnection.java
* hbase-client/src/main/java/org/apache/hadoop/hbase/CallQueueTooBigException.java


> Unnecessary MetaCache evictions cause elevated number of requests to meta
> -------------------------------------------------------------------------
>
>                 Key: HBASE-15390
>                 URL: https://issues.apache.org/jira/browse/HBASE-15390
>             Project: HBase
>          Issue Type: Bug
>          Components: Client
>    Affects Versions: 1.2.0
>            Reporter: Mikhail Antonov
>            Assignee: Mikhail Antonov
>            Priority: Blocker
>             Fix For: 2.0.0, 1.3.0
>
>         Attachments: HBASE-15390.branch-1.3.v1.patch, HBASE-15390.v1.patch
>
>
>  - In ClientExceptionsUtil#findException() we don't unwrap correctly all remote exceptions
but a few selected ones;
>    more specifically, we don't unwrap correctly all remote exceptions where getCause()
exception doesn't have a constructor (String message)
>  - In AsyncProcess#receiveGlobalFailure() we don't check for #isMetaClearingException()
if tableName is null
>  - We don't have metric on client side to track number of cache drops



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