Yin Huai 4581badbc8 [SPARK-9611] [SQL] Fixes a few corner cases when we spill a UnsafeFixedWidthAggregationMap ... This PR has the following three small fixes. 1. UnsafeKVExternalSorter does not use 0 as the initialSize to create an UnsafeInMemorySorter if its BytesToBytesMap is empty. 2. We will not not spill a InMemorySorter if it is empty. 3. We will not add a SpillReader to a SpillMerger if this SpillReader is empty. JIRA: https://issues.apache.org/jira/browse/SPARK-9611 Author: Yin Huai <yhuai@databricks.com> Closes #7948 from yhuai/unsafeEmptyMap and squashes the following commits: 9727abe [Yin Huai] Address Josh's comments. 34b6f76 [Yin Huai] 1. UnsafeKVExternalSorter does not use 0 as the initialSize to create an UnsafeInMemorySorter if its BytesToBytesMap is empty. 2. Do not spill a InMemorySorter if it is empty. 3. Do not add spill to SpillMerger if this spill is empty.		2015-08-05 19:19:09 -07:00
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src	[SPARK-9611] [SQL] Fixes a few corner cases when we spill a UnsafeFixedWidthAggregationMap	2015-08-05 19:19:09 -07:00
pom.xml	[SPARK-8064] [SQL] Build against Hive 1.2.1	2015-08-03 15:24:42 -07:00