[SPARK-22713][CORE] ExternalAppendOnlyMap leaks when spilled during iteration#21369

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eyalfa wants to merge 22 commits intoapache:masterfrom

eyalfa:SPARK-22713__ExternalAppendOnlyMap_effective_spill

Commits on May 18, 2018

SPARK-22713__ExternalAppendOnlyMap_effective_spill: add failing test.
Eyal Farago
committed
SPARK-22713__ExternalAppendOnlyMap_effective_spill: fix the issue by removing the reference to the initial iterator.
Eyal Farago
committed

Commits on May 19, 2018

SPARK-22713__ExternalAppendOnlyMap_effective_spill: fix scalastyle issues.
Eyal Farago
committed
SPARK-22713__ExternalAppendOnlyMap_effective_spill: some more styling issues.
Eyal Farago
committed
SPARK-22713__ExternalAppendOnlyMap_effective_spill: fix typo
Eyal Farago
committed

Commits on May 20, 2018

Commits on May 22, 2018

SPARK-22713__ExternalAppendOnlyMap_effective_spill: address comments by @advancedxy
Eyal Farago
committed

Commits on May 23, 2018

SPARK-22713__ExternalAppendOnlyMap_effective_spill: address comments by @cloud-fan
Eyal Farago
committed

Commits on May 24, 2018

Commits on May 25, 2018

SPARK-22713__ExternalAppendOnlyMap_effective_spill: address yet another comment from @cloud-fan.
Eyal Farago
committed

Commits on May 27, 2018

Commits on Jun 16, 2018

SPARK-22713__ExternalAppendOnlyMap_effective_spill__weak_ref_test: failed getting the weak ref testing based approach to work
Eyal Farago
committed

Commits on Aug 11, 2018

Commits on Aug 13, 2018

SPARK-22713__ExternalAppendOnlyMap_effective_spill: address styling issues commented by @cloud-fan .
Eyal Farago
committed