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From cloud-fan <...@git.apache.org>
Subject [GitHub] spark pull request #14531: [SPARK-16943] [SPARK-16942] [SQL] Fix multiple bu...
Date Mon, 22 Aug 2016 11:29:17 GMT
Github user cloud-fan commented on a diff in the pull request:

    https://github.com/apache/spark/pull/14531#discussion_r75660683
  
    --- Diff: sql/core/src/main/scala/org/apache/spark/sql/execution/command/tables.scala
---
    @@ -75,18 +81,52 @@ case class CreateTableLikeCommand(
           throw new AnalysisException(
             s"Source table in CREATE TABLE LIKE does not exist: '$sourceTable'")
         }
    -    if (catalog.isTemporaryTable(sourceTable)) {
    -      throw new AnalysisException(
    -        s"Source table in CREATE TABLE LIKE cannot be temporary: '$sourceTable'")
    -    }
     
    -    val tableToCreate = catalog.getTableMetadata(sourceTable).copy(
    -      identifier = targetTable,
    -      tableType = CatalogTableType.MANAGED,
    -      createTime = System.currentTimeMillis,
    -      lastAccessTime = -1).withNewStorage(locationUri = None)
    +    val sourceTableDesc = catalog.getTableMetadata(sourceTable)
    +    val sourceStorageFormat = sourceTableDesc.storage
     
    -    catalog.createTable(tableToCreate, ifNotExists)
    +    sourceTableDesc.tableType match {
    +      case CatalogTableType.MANAGED | CatalogTableType.EXTERNAL | CatalogTableType.VIEW
=> // OK
    +      case o => throw new AnalysisException(
    +        s"CREATE TABLE LIKE is not allowed when the source table is ${o.name}")
    +    }
    +
    +    // For EXTERNAL_TABLE, the table properties has a particular field. To change it
    +    // to a MANAGED_TABLE, we need to remove it; Otherwise, it will be EXTERNAL_TABLE,
    +    // even if we set the tableType to MANAGED
    +    // (metastore/src/java/org/apache/hadoop/hive/metastore/ObjectStore.java#L1095-L1105)
    +    // Table comment is stored as a table property. To clean it, we also should remove
them.
    +    val newTableProp = sourceTableDesc.properties.filterKeys(_ != "EXTERNAL")
    --- End diff --
    
    can you update? I think it's fixed now.


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