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https://issues.apache.org/jira/browse/HIVE-28399?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Zhihua Deng updated HIVE-28399:
-------------------------------
Labels: hive-4.0.1-must pull-request-available (was:
pull-request-available)
> Improve the fetch size in HiveConnection
> ----------------------------------------
>
> Key: HIVE-28399
> URL: https://issues.apache.org/jira/browse/HIVE-28399
> Project: Hive
> Issue Type: Improvement
> Reporter: Zhihua Deng
> Assignee: Zhihua Deng
> Priority: Major
> Labels: hive-4.0.1-must, pull-request-available
> Fix For: 4.1.0
>
>
> If the 4.x Hive Jdbc client connects to an older HS2 or other thrift
> implementations, it might throw the IllegalStateException:
> [https://github.com/apache/hive/blob/master/jdbc/src/java/org/apache/hive/jdbc/HiveConnection.java#L1253-L1258],
> as the remote might haven't set the property:
> hive.server2.thrift.resultset.default.fetch.size back to the response of
> OpenSession request. It also introduces the confusing on what the real fetch
> size the connection is, as we have both initFetchSize and defaultFetchSize in
> this HiveConnection, the HiveStatement checks the initFetchSize,
> defaultFetchSize and
> HIVE_SERVER2_THRIFT_RESULTSET_DEFAULT_FETCH_SIZE.defaultIntVal to obtain the
> real fetch size, we can make them one in HiveConnection, so every statement
> created from the connection uses this new fetch size.
>
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