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43 lines
1.3 KiB
Thrift
43 lines
1.3 KiB
Thrift
// Copyright 2012 Cloudera Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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namespace cpp impala
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namespace java com.cloudera.impala.thrift
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include "Exprs.thrift"
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enum TPartitionType {
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UNPARTITIONED,
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// round-robin partition
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RANDOM,
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// unordered partition on a set of exprs
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// (partition bounds overlap)
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HASH_PARTITIONED,
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// ordered partition on a list of exprs
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// (partition bounds don't overlap)
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RANGE_PARTITIONED
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}
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// Specification of how a single logical data stream is partitioned.
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// This leaves out the parameters that determine the physical partition (for hash
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// partitions, the number of partitions; for range partitions, the partitions'
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// boundaries), which need to be specified by the enclosing structure/context.
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struct TDataPartition {
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1: required TPartitionType type
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2: optional list<Exprs.TExpr> partition_exprs
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}
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