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[SPARK-4443][SQL] Fix statistics for external table in spark sql hive
The `totalSize` of external table is always zero, which will influence join strategy(always use broadcast join for external table). Author: w00228970 <wangfei1@huawei.com> Closes #3304 from scwf/statistics and squashes the following commits: 568f321 [w00228970] fix statistics for external table
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- sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveMetastoreCatalog.scala 8 additions, 3 deletions...cala/org/apache/spark/sql/hive/HiveMetastoreCatalog.scala
- sql/hive/v0.12.0/src/main/scala/org/apache/spark/sql/hive/Shim12.scala 2 additions, 0 deletions...2.0/src/main/scala/org/apache/spark/sql/hive/Shim12.scala
- sql/hive/v0.13.1/src/main/scala/org/apache/spark/sql/hive/Shim13.scala 2 additions, 0 deletions...3.1/src/main/scala/org/apache/spark/sql/hive/Shim13.scala
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