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[SPARK-17221] Build File-based Test Cases for Using Join and Left-Semi Join - Spark - [issue]
...Based on file-based SQL end-to-end testing framework in `SQLQueryTestSuite`, this PR is to create test cases for `left-semi` joins and `using` joins. We did not change the data and query, an...    Author: Xiao Li , 2019-05-21, 04:35
[SPARK-14112] Unique Constraints over a Set of AttributeReferences - Spark - [issue]
...Introduce unique constraints over a set of `AttributeReference`s. Optimizer can remove unnecessary `Distinct` from the plan, as shown in the PR: ...    Author: Xiao Li , 2019-05-21, 04:34
[SPARK-15331] Disallow All the Unsupported CLI Commands - Spark - [issue]
...The JIRAs under remove the command supports that are not natively supported by Spark. However, in Spark-SQL CLI, we still delegate the CLI c...    Author: Xiao Li , 2019-05-21, 04:34
[SPARK-16657] Replace children by innerChildren in InsertIntoHadoopFsRelationCommand and CreateHiveTableAsSelectCommand - Spark - [issue]
...The query in `InsertIntoHadoopFsRelationCommand` and `CreateHiveTableAsSelectCommand` should be treated as inner children, like what we did for the other similar nodes: `CreateDataSourceTabl...    Author: Xiao Li , 2019-05-21, 04:34
[SPARK-13811] No Push Down for Null Filtering of Compound Expressions Generated from Constraints - Spark - [issue]
...Null filtering of compound expressions generated from Constraints should not be pushed down....    Author: Xiao Li , 2019-05-21, 04:34
[SPARK-17030] Remove/Cleanup HiveMetastoreCatalog.scala - Spark - [issue]
...Metadata cache is a key-value cache built on Google Guava Cache to speed up building logical plan nodes (`LogicalRelation`) for data source tables. The cache key is a unique identifier of a ...    Author: Xiao Li , 2019-05-21, 04:34
[SPARK-14920] Location should not be Specified in Creating Non-external Table - Spark - [issue]
...When creating non-external tables, we should not specify the location. Below is the warning message we got. 09:58:00.952 WARN org.apache.hadoop.hive.metastore.HiveMetaStore: Location: file:/...    Author: Xiao Li , 2019-05-21, 04:33
[SPARK-15358] Rename HiveDDLCommandSuite and DDLCommandSuite to HivePlanParserSuite and PlanParserSuite - Spark - [issue]
...After we moving `HiveSqlParser` to `SparkSqlParser`, most of test cases in `HiveDDLCommandSuite` should be also moved to `DDLCommandSuite`.The test suites named `DDLCommandSuite` and `HiveDD...    Author: Xiao Li , 2019-05-21, 04:33
[SPARK-14032] Eliminate Unnecessary Distinct/Aggregate - Spark - [issue]
...Distinct is an expensive operation. If possible, we should avoid it. When the child operators can guarantee the distinct, we can remove it.For example, in the following TPC-DS query 38, the ...    Author: Xiao Li , 2019-05-21, 04:33
[SPARK-18595] Handling ignoreIfExists in HiveExternalCatalog createTable API - Spark - [issue]
...Currently, `HiveExternalCatalog`'s `createTable` issues the exception if `ignoreIfExists` is true and the table exists. However, this is just a partial handling of `ignoreIfExists`. We can c...    Author: Xiao Li , 2019-05-21, 04:33