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This PR is based on #1883 authored by marmbrus. Key differences: 1. Batch pruning instead of partition pruning When #1883 was authored, batched column buffer building (#1880) hadn't been introduced. This PR combines these two and provide partition batch level pruning, which leads to smaller memory footprints and can generally skip more elements. The cost is that the pruning predicates are evaluated more frequently (partition number multiplies batch number per partition). 1. More filters are supported Filter predicates consist of `=`, `<`, `<=`, `>`, `>=` and their conjunctions and disjunctions are supported. Author: Cheng Lian <lian.cs.zju@gmail.com> Closes #2188 from liancheng/in-mem-batch-pruning and squashes the following commits: 68cf019 [Cheng Lian] Marked sqlContext as @transient 4254f6c [Cheng Lian] Enables in-memory partition pruning in PartitionBatchPruningSuite 3784105 [Cheng Lian] Overrides InMemoryColumnarTableScan.sqlContext d2a1d66 [Cheng Lian] Disables in-memory partition pruning by default 062c315 [Cheng Lian] HiveCompatibilitySuite code cleanup 16b77bf [Cheng Lian] Fixed pruning predication conjunctions and disjunctions 16195c5 [Cheng Lian] Enabled both disjunction and conjunction 89950d0 [Cheng Lian] Worked around Scala style check 9c167f6 [Cheng Lian] Minor code cleanup 3c4d5c7 [Cheng Lian] Minor code cleanup ea59ee5 [Cheng Lian] Renamed PartitionSkippingSuite to PartitionBatchPruningSuite fc517d0 [Cheng Lian] More test cases 1868c18 [Cheng Lian] Code cleanup, bugfix, and adding tests cb76da4 [Cheng Lian] Added more predicate filters, fixed table scan stats for testing purposes 385474a [Cheng Lian] Merge branch 'inMemStats' into in-mem-batch-pruning |
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