[SPARK-27637][Shuffle] For nettyBlockTransferService, if IOException occurred while fetching data, check whether relative executor is alive before retry#24533

Closed

turboFei wants to merge 5 commits intoapache:masterfrom

turboFei:SPARK-27637

Commits on May 14, 2019

[SPARK-27637] For nettyBlockTransferService, if IOException thrown while fetching data, check whether relative executor is alive before retry.
hustfeiwang
committed

Commits on May 16, 2019

fix unit test
hustfeiwang
committed

Commits on May 17, 2019

fix nit
hustfeiwang
committed

Commits on May 20, 2019

[SPARK-27637] If asksync fails, throw the origin exception
hustfeiwang
committed
remove the assert
hustfeiwang
committed