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https://issues.apache.org/jira/browse/HIVE-21000?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16934161#comment-16934161
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David Lavati commented on HIVE-21000:
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{quote}Another thing that might need investigation, is the fact that the fb303
wrapper according to THRIFT-4506 is no longer maintained in the Thrift ASF
project. A high number of handlers and metastore-related scripts rely on this.
{quote}
Is this something we need to worry about? I'm not sure how it will play along
with a newer thrift version.
> Upgrade thrift to at least 0.10.0
> ---------------------------------
>
> Key: HIVE-21000
> URL: https://issues.apache.org/jira/browse/HIVE-21000
> Project: Hive
> Issue Type: Improvement
> Reporter: Zoltan Haindrich
> Assignee: Ivan Suller
> Priority: Major
> Attachments: HIVE-21000.01.patch, HIVE-21000.02.patch,
> HIVE-21000.03.patch, HIVE-21000.04.patch, HIVE-21000.05.patch,
> HIVE-21000.06.patch, HIVE-21000.07.patch, HIVE-21000.08.patch,
> sampler_before.png
>
>
> I was looking into some compile profiles for tables with lots of columns; and
> it turned out that [thrift 0.9.3 is allocating a
> List|https://github.com/apache/hive/blob/8e30b5e029570407d8a1db67d322a95db705750e/standalone-metastore/metastore-common/src/gen/thrift/gen-javabean/org/apache/hadoop/hive/metastore/api/FieldSchema.java#L348]
> during every hashcode calculation; but luckily THRIFT-2877 is improving on
> that - so I propose to upgrade to at least 0.10.0
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