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https://issues.apache.org/jira/browse/SPARK-4760?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Armbrust updated SPARK-4760:
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Target Version/s: 1.3.0
Affects Version/s: (was: 1.3.0)
> "ANALYZE TABLE table COMPUTE STATISTICS noscan" failed estimating table size
> for tables created from Parquet files
> ------------------------------------------------------------------------------------------------------------------
>
> Key: SPARK-4760
> URL: https://issues.apache.org/jira/browse/SPARK-4760
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 1.2.0
> Reporter: Jianshi Huang
>
> In a older Spark version built around Oct. 12, I was able to use
> ANALYZE TABLE table COMPUTE STATISTICS noscan
> to get estimated table size, which is important for optimizing joins. (I'm
> joining 15 small dimension tables, and this is crucial to me).
> In the more recent Spark builds, it fails to estimate the table size unless I
> remove "noscan".
> Here's the statistics I got using DESC EXTENDED:
> old:
> parameters:{EXTERNAL=TRUE, transient_lastDdlTime=1417763591, totalSize=56166}
> new:
> parameters:{numFiles=0, EXTERNAL=TRUE, transient_lastDdlTime=1417763892,
> COLUMN_STATS_ACCURATE=false, totalSize=0, numRows=-1, rawDataSize=-1}
> And I've tried turning off spark.sql.hive.convertMetastoreParquet in my
> spark-defaults.conf and the result is unaffected (in both versions).
> Looks like the Parquet support in new Hive (0.13.1) is broken?
> Jianshi
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