[SPARK-20282][SS][Tests]Write the commit log first to fix a race contion in tests #17594
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zsxwing
changed the title
marmbrus
reviewed
Apr 10, 2017
| if (dataAvailable) { | ||
| // Update committed offsets. | ||
| committedOffsets ++= availableOffsets | ||
| batchCommitLog.add(currentBatchId) |
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This is existing, but do we not write to the commit log if there is no new data in the next batch?
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I think it's because we only update currentBatchId when data is available. cc @tdas
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Technically, when there is a batch with data, it finishes executing and then increments the batch id for the next batch. But if next batch has no data, then the batchid not further increment, and gets eventually used in a future batch with data.
So i think it is correct to update the commit log as soon this batch is done, and before the batch id is incremented for next batch. This change maintains that invariant as far as i think.
Contributor
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LGTM, for fixing the issue with the test. We should separately decide if this is really the behavior we want for the commit log. |
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Test build #75670 has finished for PR 17594 at commit
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Thanks! Merging to master. |
peter-toth
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Oct 6, 2018
…tion in tests ## What changes were proposed in this pull request? This PR fixes the following failure: ``` sbt.ForkMain$ForkError: org.scalatest.exceptions.TestFailedException: Assert on query failed: == Progress == AssertOnQuery(<condition>, ) StopStream AddData to MemoryStream[value#30891]: 1,2 StartStream(OneTimeTrigger,org.apache.spark.util.SystemClock35cdc93a,Map()) CheckAnswer: [6],[3] StopStream => AssertOnQuery(<condition>, ) AssertOnQuery(<condition>, ) StartStream(OneTimeTrigger,org.apache.spark.util.SystemClockcdb247d,Map()) CheckAnswer: [6],[3] StopStream AddData to MemoryStream[value#30891]: 3 StartStream(OneTimeTrigger,org.apache.spark.util.SystemClock55394e4d,Map()) CheckLastBatch: [2] StopStream AddData to MemoryStream[value#30891]: 0 StartStream(OneTimeTrigger,org.apache.spark.util.SystemClock749aa997,Map()) ExpectFailure[org.apache.spark.SparkException, isFatalError: false] AssertOnQuery(<condition>, ) AssertOnQuery(<condition>, incorrect start offset or end offset on exception) == Stream == Output Mode: Append Stream state: not started Thread state: dead == Sink == 0: [6] [3] == Plan == at org.scalatest.Assertions$class.newAssertionFailedException(Assertions.scala:495) at org.scalatest.FunSuite.newAssertionFailedException(FunSuite.scala:1555) at org.scalatest.Assertions$class.fail(Assertions.scala:1328) at org.scalatest.FunSuite.fail(FunSuite.scala:1555) at org.apache.spark.sql.streaming.StreamTest$class.failTest$1(StreamTest.scala:347) at org.apache.spark.sql.streaming.StreamTest$class.verify$1(StreamTest.scala:318) at org.apache.spark.sql.streaming.StreamTest$$anonfun$liftedTree1$1$1.apply(StreamTest.scala:483) at org.apache.spark.sql.streaming.StreamTest$$anonfun$liftedTree1$1$1.apply(StreamTest.scala:357) at scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59) at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:48) at org.apache.spark.sql.streaming.StreamTest$class.liftedTree1$1(StreamTest.scala:357) at org.apache.spark.sql.streaming.StreamTest$class.testStream(StreamTest.scala:356) at org.apache.spark.sql.streaming.StreamingQuerySuite.testStream(StreamingQuerySuite.scala:41) at org.apache.spark.sql.streaming.StreamingQuerySuite$$anonfun$6.apply$mcV$sp(StreamingQuerySuite.scala:166) at org.apache.spark.sql.streaming.StreamingQuerySuite$$anonfun$6.apply(StreamingQuerySuite.scala:161) at org.apache.spark.sql.streaming.StreamingQuerySuite$$anonfun$6.apply(StreamingQuerySuite.scala:161) at org.apache.spark.sql.catalyst.util.package$.quietly(package.scala:42) at org.apache.spark.sql.test.SQLTestUtils$$anonfun$testQuietly$1.apply$mcV$sp(SQLTestUtils.scala:268) at org.apache.spark.sql.test.SQLTestUtils$$anonfun$testQuietly$1.apply(SQLTestUtils.scala:268) at org.apache.spark.sql.test.SQLTestUtils$$anonfun$testQuietly$1.apply(SQLTestUtils.scala:268) at org.scalatest.Transformer$$anonfun$apply$1.apply$mcV$sp(Transformer.scala:22) at org.scalatest.OutcomeOf$class.outcomeOf(OutcomeOf.scala:85) at org.scalatest.OutcomeOf$.outcomeOf(OutcomeOf.scala:104) at org.scalatest.Transformer.apply(Transformer.scala:22) at org.scalatest.Transformer.apply(Transformer.scala:20) at org.scalatest.FunSuiteLike$$anon$1.apply(FunSuiteLike.scala:166) at org.apache.spark.SparkFunSuite.withFixture(SparkFunSuite.scala:68) at org.scalatest.FunSuiteLike$class.invokeWithFixture$1(FunSuiteLike.scala:163) at org.scalatest.FunSuiteLike$$anonfun$runTest$1.apply(FunSuiteLike.scala:175) at org.scalatest.FunSuiteLike$$anonfun$runTest$1.apply(FunSuiteLike.scala:175) at org.scalatest.SuperEngine.runTestImpl(Engine.scala:306) at org.scalatest.FunSuiteLike$class.runTest(FunSuiteLike.scala:175) at org.apache.spark.sql.streaming.StreamingQuerySuite.org$scalatest$BeforeAndAfterEach$$super$runTest(StreamingQuerySuite.scala:41) at org.scalatest.BeforeAndAfterEach$class.runTest(BeforeAndAfterEach.scala:255) at org.apache.spark.sql.streaming.StreamingQuerySuite.org$scalatest$BeforeAndAfter$$super$runTest(StreamingQuerySuite.scala:41) at org.scalatest.BeforeAndAfter$class.runTest(BeforeAndAfter.scala:200) at org.apache.spark.sql.streaming.StreamingQuerySuite.runTest(StreamingQuerySuite.scala:41) at org.scalatest.FunSuiteLike$$anonfun$runTests$1.apply(FunSuiteLike.scala:208) at org.scalatest.FunSuiteLike$$anonfun$runTests$1.apply(FunSuiteLike.scala:208) at org.scalatest.SuperEngine$$anonfun$traverseSubNodes$1$1.apply(Engine.scala:413) at org.scalatest.SuperEngine$$anonfun$traverseSubNodes$1$1.apply(Engine.scala:401) at scala.collection.immutable.List.foreach(List.scala:381) at org.scalatest.SuperEngine.traverseSubNodes$1(Engine.scala:401) at org.scalatest.SuperEngine.org$scalatest$SuperEngine$$runTestsInBranch(Engine.scala:396) at org.scalatest.SuperEngine.runTestsImpl(Engine.scala:483) at org.scalatest.FunSuiteLike$class.runTests(FunSuiteLike.scala:208) at org.scalatest.FunSuite.runTests(FunSuite.scala:1555) at org.scalatest.Suite$class.run(Suite.scala:1424) at org.scalatest.FunSuite.org$scalatest$FunSuiteLike$$super$run(FunSuite.scala:1555) at org.scalatest.FunSuiteLike$$anonfun$run$1.apply(FunSuiteLike.scala:212) at org.scalatest.FunSuiteLike$$anonfun$run$1.apply(FunSuiteLike.scala:212) at org.scalatest.SuperEngine.runImpl(Engine.scala:545) at org.scalatest.FunSuiteLike$class.run(FunSuiteLike.scala:212) at org.apache.spark.SparkFunSuite.org$scalatest$BeforeAndAfterAll$$super$run(SparkFunSuite.scala:31) at org.scalatest.BeforeAndAfterAll$class.liftedTree1$1(BeforeAndAfterAll.scala:257) at org.scalatest.BeforeAndAfterAll$class.run(BeforeAndAfterAll.scala:256) at org.apache.spark.sql.streaming.StreamingQuerySuite.org$scalatest$BeforeAndAfter$$super$run(StreamingQuerySuite.scala:41) at org.scalatest.BeforeAndAfter$class.run(BeforeAndAfter.scala:241) at org.apache.spark.sql.streaming.StreamingQuerySuite.run(StreamingQuerySuite.scala:41) at org.scalatest.tools.Framework.org$scalatest$tools$Framework$$runSuite(Framework.scala:357) at org.scalatest.tools.Framework$ScalaTestTask.execute(Framework.scala:502) at sbt.ForkMain$Run$2.call(ForkMain.java:296) at sbt.ForkMain$Run$2.call(ForkMain.java:286) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) ``` The failure is because `CheckAnswer` will run once `committedOffsets` is updated. Then writing the commit log may be interrupted by the following `StopStream`. This PR just change the order to write the commit log first. ## How was this patch tested? Jenkins Author: Shixiong Zhu <[email protected]> Closes apache#17594 from zsxwing/SPARK-20282.
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What changes were proposed in this pull request?
This PR fixes the following failure:
The failure is because
CheckAnswerwill run oncecommittedOffsetsis updated. Then writing the commit log may be interrupted by the followingStopStream.This PR just change the order to write the commit log first.
How was this patch tested?
Jenkins