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Posted to dev@hive.apache.org by "Carl Steinbach (JIRA)" <ji...@apache.org> on 2010/07/06 23:37:51 UTC
[jira] Updated: (HIVE-1364) Increase the maximum length of
SERDEPROPERTIES values (currently 767 characters)
[ https://issues.apache.org/jira/browse/HIVE-1364?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Carl Steinbach updated HIVE-1364:
---------------------------------
Fix Version/s: 0.7.0
> Increase the maximum length of SERDEPROPERTIES values (currently 767 characters)
> --------------------------------------------------------------------------------
>
> Key: HIVE-1364
> URL: https://issues.apache.org/jira/browse/HIVE-1364
> Project: Hadoop Hive
> Issue Type: Bug
> Components: Metastore
> Affects Versions: 0.5.0
> Reporter: Carl Steinbach
> Assignee: Carl Steinbach
> Fix For: 0.6.0, 0.7.0
>
> Attachments: HIVE-1364.2.patch.txt, HIVE-1364.patch
>
>
> The value component of a SERDEPROPERTIES key/value pair is currently limited
> to a maximum length of 767 characters. I believe that the motivation for limiting the length to
> 767 characters is that this value is the maximum allowed length of an index in
> a MySQL database running on the InnoDB engine: http://bugs.mysql.com/bug.php?id=13315
> * The Metastore OR mapping currently limits many fields (including SERDEPROPERTIES.PARAM_VALUE) to a maximum length of 767 characters despite the fact that these fields are not indexed.
> * The maximum length of a VARCHAR value in MySQL 5.0.3 and later is 65,535.
> * We can expect many users to hit the 767 character limit on SERDEPROPERTIES.PARAM_VALUE when using the hbase.columns.mapping serdeproperty to map a table that has many columns.
> I propose increasing the maximum allowed length of SERDEPROPERTIES.PARAM_VALUE to 8192.
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