[ https://issues.apache.org/jira/browse/FLINK-12334?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16831932#comment-16831932 ]
Cliff Resnick edited comment on FLINK-12334 at 5/2/19 8:27 PM: --------------------------------------------------------------- Hi [~fan_li_ya] We have a custom StreamOperator with an open() method like: {{override def open(): Unit = {}} {{ getRuntimeContext.addAccumulator("combiner-in", recordsIn)}} {{ getRuntimeContext.addAccumulator("combiner-out", recordsOut)}} {{ getProcessingTimeService.scheduleAtFixedRate(this, pause, pause)}} {{}}} The `getRuntimeContext.addAccumulator` call no longer works in 1.8 because the MockStreamTask returned by getRuntimeContext is trying to add the accumulator to an immutable empty map. was (Author: cre...@gmail.com): Hi [~fan_li_ya] We have a custom StreamOperator with an open() method like: {{ override def open(): Unit = { getRuntimeContext.addAccumulator("combiner-in", recordsIn) getRuntimeContext.addAccumulator("combiner-out", recordsOut) getProcessingTimeService.scheduleAtFixedRate(this, pause, pause) } }} The `getRuntimeContext.addAccumulator` call no longer works in 1.8 because the MockStreamTask returned by getRuntimeContext is trying to add the accumulator to an immutable empty map. > change to MockStreamTask breaks OneInputStreamOperatorTestHarness > ----------------------------------------------------------------- > > Key: FLINK-12334 > URL: https://issues.apache.org/jira/browse/FLINK-12334 > Project: Flink > Issue Type: Bug > Components: API / DataStream > Affects Versions: 1.8.0 > Reporter: Cliff Resnick > Priority: Major > > The move to the MockStreamTask is created with does not include > initialization of an Accumulator Map when using the builder > [https://github.com/apache/flink/blob/e43d55445e7abcadb92460bb4d61e28540f1189d/flink-streaming-java/src/test/java/org/apache/flink/streaming/util/AbstractStreamOperatorTestHarness.java#L198] > This results in with a TestHarness whose context contains an immutable empty > map and is breaking tests. The fix is simple, please include an actual map in > the builder call. > -- This message was sent by Atlassian JIRA (v7.6.3#76005)