zhoukang 45b4bbfddc [SPARK-23129][CORE] Make deserializeStream of DiskMapIterator init lazily ... ## What changes were proposed in this pull request? Currently,the deserializeStream in ExternalAppendOnlyMap#DiskMapIterator init when DiskMapIterator instance created.This will cause memory use overhead when ExternalAppendOnlyMap spill too much times. We can avoid this by making deserializeStream init when it is used the first time. This patch make deserializeStream init lazily. ## How was this patch tested? Exist tests Author: zhoukang <zhoukang199191@gmail.com> Closes #20292 from caneGuy/zhoukang/lay-diskmapiterator.		2018-01-25 15:24:52 +08:00
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src	[SPARK-23129][CORE] Make deserializeStream of DiskMapIterator init lazily	2018-01-25 15:24:52 +08:00
pom.xml	[SPARK-23028] Bump master branch version to 2.4.0-SNAPSHOT	2018-01-13 00:37:59 +08:00