shark.execution.ReduceSinkTableDesc.scala Maven / Gradle / Ivy
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/*
* Copyright (C) 2012 The Regents of The University California.
* All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package shark.execution
import org.apache.hadoop.hive.ql.plan.TableDesc
import shark.LogHelper
trait ReduceSinkTableDesc extends LogHelper {
self: Operator[_ <: HiveDesc] =>
// Seq(tag, (Key TableDesc, Value TableDesc))
def keyValueDescs(): Seq[(Int, (TableDesc, TableDesc))] = {
// get the parent ReduceSinkOperator and sort it by tag
val reduceSinkOps =
for (op <- self.parentOperators.toSeq if op.isInstanceOf[ReduceSinkOperator])
yield op.asInstanceOf[ReduceSinkOperator]
reduceSinkOps.map(f => (f.getTag, f.getKeyValueTableDescs))
}
}