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https://issues.apache.org/jira/browse/SPARK-9272?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15953582#comment-15953582
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Daniel Tomes commented on SPARK-9272:
-------------------------------------
BUMP
This is an important issue. Let's get this resolved.
> Persist information of individual partitions when persisting partitioned data
> source tables to metastore
> --------------------------------------------------------------------------------------------------------
>
> Key: SPARK-9272
> URL: https://issues.apache.org/jira/browse/SPARK-9272
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 1.5.0
> Reporter: Cheng Lian
>
> Currently, when a partitioned data source table is persisted to Hive
> metastore, we only persist its partition columns. Information about
> individual partitions are not persisted. This forces us to do a partition
> discovery before reading a persisted partitioned table, which hurts
> performance.
> To fix this issue, we may persist partition information into metastore.
> Specifically, the format should be compatible with Hive to ensure
> interoperability.
> One of the approach to collect partition values and partition directory path
> for dynamicly partitioned tables is to use accumulators to collect expected
> information during the write job.
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