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https://issues.apache.org/jira/browse/HIVE-29330?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Zhihua Deng updated HIVE-29330:
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Description:
HiveMetaStoreAuthorizer can act as the pre event listener inside the HMS, or as
the metadata filter hook on the client. If it's insides the HMS, getConf()
should have loaded all properties in hive-site.xml, otherwise it contains the
information to talk with the HMS at least, as the call is from client as a
filter hook.
We don't need to create a new HiveConf per thread, it's wasteful and might
spend dozens of milliseconds to load the properties, log the warn message
"HiveConf of name xx does not exist" continuously if the property is only
specified in MetastoreConf.
was:
HiveMetaStoreAuthorizer can act as a pre event listener inside the HMS, or as
the metadata filter hook on the client. If it's insides the HMS, getConf()
should have loaded all properties in hive-site.xml, otherwise it contains the
information to talk with the HMS at least, as the call is from client as a
filter hook.
We don't need to create a new HiveConf per thread, it's wasteful and might
spend dozens of milliseconds to load the properties, log the warn message
"HiveConf of name xx does not exist" continuously if the property is only
specified in MetastoreConf.
> HiveMetaStoreAuthorizer creating new HiveConf per thread increases overhead
> ---------------------------------------------------------------------------
>
> Key: HIVE-29330
> URL: https://issues.apache.org/jira/browse/HIVE-29330
> Project: Hive
> Issue Type: Improvement
> Reporter: Zhihua Deng
> Priority: Major
>
> HiveMetaStoreAuthorizer can act as the pre event listener inside the HMS, or
> as the metadata filter hook on the client. If it's insides the HMS, getConf()
> should have loaded all properties in hive-site.xml, otherwise it contains the
> information to talk with the HMS at least, as the call is from client as a
> filter hook.
> We don't need to create a new HiveConf per thread, it's wasteful and might
> spend dozens of milliseconds to load the properties, log the warn message
> "HiveConf of name xx does not exist" continuously if the property is only
> specified in MetastoreConf.
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