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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-8268) Test instability for 'TwoPhaseCommitSinkFunctionTest'
Date Mon, 01 Jan 2018 12:03:01 GMT

    [ https://issues.apache.org/jira/browse/FLINK-8268?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16307426#comment-16307426
] 

ASF GitHub Bot commented on FLINK-8268:
---------------------------------------

Github user GJL commented on a diff in the pull request:

    https://github.com/apache/flink/pull/5193#discussion_r159153854
  
    --- Diff: flink-streaming-java/src/test/java/org/apache/flink/streaming/api/functions/sink/ContentDump.java
---
    @@ -0,0 +1,134 @@
    +/*
    + * Licensed to the Apache Software Foundation (ASF) under one or more
    + * contributor license agreements.  See the NOTICE file distributed with
    + * this work for additional information regarding copyright ownership.
    + * The ASF licenses this file to You under the Apache License, Version 2.0
    + * (the "License"); you may not use this file except in compliance with
    + * the License.  You may obtain a copy of the License at
    + *
    + *    http://www.apache.org/licenses/LICENSE-2.0
    + *
    + * Unless required by applicable law or agreed to in writing, software
    + * distributed under the License is distributed on an "AS IS" BASIS,
    + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    + * See the License for the specific language governing permissions and
    + * limitations under the License.
    + */
    +
    +package org.apache.flink.streaming.api.functions.sink;
    +
    +import java.util.ArrayList;
    +import java.util.Collection;
    +import java.util.HashMap;
    +import java.util.List;
    +import java.util.Map;
    +import java.util.Set;
    +
    +import static org.apache.flink.util.Preconditions.checkArgument;
    +import static org.apache.flink.util.Preconditions.checkNotNull;
    +import static org.apache.flink.util.Preconditions.checkState;
    +
    +/**
    + * Utility class to simulate in memory file like writes, flushes and closing.
    + */
    +public class ContentDump {
    +	private boolean writable = true;
    +	private Map<String, List<String>> filesContent = new HashMap<>();
    +
    +	public Set<String> listFiles() {
    +		return filesContent.keySet();
    --- End diff --
    
    Maybe return a copy here because the key set will reflect changes in the map.


> Test instability for 'TwoPhaseCommitSinkFunctionTest'
> -----------------------------------------------------
>
>                 Key: FLINK-8268
>                 URL: https://issues.apache.org/jira/browse/FLINK-8268
>             Project: Flink
>          Issue Type: Bug
>          Components: Tests
>    Affects Versions: 1.5.0
>            Reporter: Stephan Ewen
>            Assignee: Piotr Nowojski
>            Priority: Critical
>              Labels: test-stability
>
> The following exception / failure message occurs.
> {code}
> Tests run: 5, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 1.824 sec <<<
FAILURE! - in org.apache.flink.streaming.api.functions.sink.TwoPhaseCommitSinkFunctionTest
> testIgnoreCommitExceptionDuringRecovery(org.apache.flink.streaming.api.functions.sink.TwoPhaseCommitSinkFunctionTest)
 Time elapsed: 0.068 sec  <<< ERROR!
> java.lang.Exception: Could not complete snapshot 0 for operator MockTask (1/1).
> 	at java.io.FileOutputStream.writeBytes(Native Method)
> 	at java.io.FileOutputStream.write(FileOutputStream.java:326)
> 	at sun.nio.cs.StreamEncoder.writeBytes(StreamEncoder.java:221)
> 	at sun.nio.cs.StreamEncoder.implFlushBuffer(StreamEncoder.java:291)
> 	at sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:295)
> 	at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:141)
> 	at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:229)
> 	at java.io.BufferedWriter.flush(BufferedWriter.java:254)
> 	at org.apache.flink.streaming.api.functions.sink.TwoPhaseCommitSinkFunctionTest$FileBasedSinkFunction.preCommit(TwoPhaseCommitSinkFunctionTest.java:313)
> 	at org.apache.flink.streaming.api.functions.sink.TwoPhaseCommitSinkFunctionTest$FileBasedSinkFunction.preCommit(TwoPhaseCommitSinkFunctionTest.java:288)
> 	at org.apache.flink.streaming.api.functions.sink.TwoPhaseCommitSinkFunction.snapshotState(TwoPhaseCommitSinkFunction.java:290)
> 	at org.apache.flink.streaming.util.functions.StreamingFunctionUtils.trySnapshotFunctionState(StreamingFunctionUtils.java:118)
> 	at org.apache.flink.streaming.util.functions.StreamingFunctionUtils.snapshotFunctionState(StreamingFunctionUtils.java:99)
> 	at org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.snapshotState(AbstractUdfStreamOperator.java:90)
> 	at org.apache.flink.streaming.api.operators.AbstractStreamOperator.snapshotState(AbstractStreamOperator.java:357)
> 	at org.apache.flink.streaming.util.AbstractStreamOperatorTestHarness.snapshot(AbstractStreamOperatorTestHarness.java:459)
> 	at org.apache.flink.streaming.api.functions.sink.TwoPhaseCommitSinkFunctionTest.testIgnoreCommitExceptionDuringRecovery(TwoPhaseCommitSinkFunctionTest.java:208)
> {code}



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