[BEAM-6929] Prevent NullPointerException in Flink's CombiningState#8162
Merged
iemejia merged 1 commit intoapache:masterfrom Mar 29, 2019
Merged
[BEAM-6929] Prevent NullPointerException in Flink's CombiningState#8162iemejia merged 1 commit intoapache:masterfrom
iemejia merged 1 commit intoapache:masterfrom
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When the accumulator is retrieved and it has not been initialized yet, the
Flink's StateInternals return null. This can lead to a NullPointerException for
Session windows with allowed lateness, where the state is cleared and the
accumulator is retrieved afterwards.
Post-Commit Tests Status (on master branch)
Pre-Commit Tests Status (on master branch)
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