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From "Nemon Lou (JIRA)" <>
Subject [jira] [Updated] (HIVE-10817) Blacklist For Bad MetaStore
Date Tue, 26 May 2015 07:46:18 GMT


Nemon Lou updated HIVE-10817:
    Attachment: HIVE-10817

> Blacklist For Bad MetaStore
> ---------------------------
>                 Key: HIVE-10817
>                 URL:
>             Project: Hive
>          Issue Type: Improvement
>          Components: HiveServer2, Metastore
>    Affects Versions: 1.2.0
>            Reporter: Nemon Lou
>            Assignee: Nemon Lou
>         Attachments: HIVE-10817
>     During a reliability test ,when one of MetaStore 's machine power down ,HiveServer2
then never submit jobs to YARN.
>     There are 100 JDBC clients (Beeline)  running concurrently.And all the 100 JDBC clients
>     After checking HiveServer2's thread stack,i find that most of the threads waiting
to lock AbstractService while the one holding it is trying to connect to 
> the bad MetaStore which has been power down.When the thread which hold this lock finally
return SocketTimeoutException and release this lock,another thread will hold this lock and
again stuck until  socket time out.
>     Adding a new blacklist mechanism finally solved this issue. 

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