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From "Hive QA (JIRA)" <>
Subject [jira] [Commented] (HIVE-9508) MetaStore client socket connection should have a lifetime
Date Fri, 30 Jan 2015 16:33:35 GMT


Hive QA commented on HIVE-9508:

{color:red}Overall{color}: -1 at least one tests failed

Here are the results of testing the latest attachment:

{color:red}ERROR:{color} -1 due to 2 failed/errored test(s), 7410 tests executed
*Failed tests:*

Test results:
Console output:
Test logs:

Executing org.apache.hive.ptest.execution.PrepPhase
Executing org.apache.hive.ptest.execution.ExecutionPhase
Executing org.apache.hive.ptest.execution.ReportingPhase
Tests exited with: TestsFailedException: 2 tests failed

This message is automatically generated.

ATTACHMENT ID: 12695254 - PreCommit-HIVE-TRUNK-Build

> MetaStore client socket connection should have a lifetime
> ---------------------------------------------------------
>                 Key: HIVE-9508
>                 URL:
>             Project: Hive
>          Issue Type: Improvement
>          Components: CLI, Metastore
>            Reporter: Thiruvel Thirumoolan
>            Assignee: Thiruvel Thirumoolan
>              Labels: metastore, rolling_upgrade
>             Fix For: 1.2.0
>         Attachments: HIVE-9508.1.patch
> Currently HiveMetaStoreClient (or SessionHMSC) is connected to one Metastore server until
the connection is closed or there is a problem. I would like to introduce the concept of a
MetaStore client socket life time. The MS client will reconnect if the socket lifetime is
reached. This will help during rolling upgrade of Metastore.
> When there are multiple Metastore servers behind a VIP (load balancer), it is easy to
take one server out of rotation and wait for 10+ mins for all existing connections will die
down (if the lifetime is 5mins say) and the server can be updated.

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