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Posted to issues@flink.apache.org by GitBox <gi...@apache.org> on 2021/03/16 10:31:50 UTC

[GitHub] [flink] paul8263 opened a new pull request #15237: [FLINK-21278][streaming-java] NullpointExecption error is reported wh…

paul8263 opened a new pull request #15237:
URL: https://github.com/apache/flink/pull/15237


   [FLINK-21278][streaming-java] NullpointExecption error is reported when using the evictor method to filter the data before the window calculation.
   
   ## What is the purpose of the change
   
   If no elements entered ReduceApply***Function, it would return a collection with only one null element. Thus a NPE would be thrown in the user function. This commit fixed this issue.
   
   ## Brief change log
   
   Added a null check for input elements in the folllowing files:
   
   - flink-streaming-java: org/apache/flink/streaming/api/functions/windowing/ReduceApplyAllWindowFunction.java
   - flink-streaming-java: org/apache/flink/streaming/api/functions/windowing/ReduceApplyProcessAllWindowFunction.java
   - flink-streaming-java: org/apache/flink/streaming/api/functions/windowing/ReduceApplyProcessWindowFunction.java
   - flink-streaming-java: org/apache/flink/streaming/api/functions/windowing/ReduceApplyWindowFunction.java
   
   
   ## Verifying this change
   
   
   This change added tests and can be verified as follows:
   
   Created test located in flink-tests: org/apache/flink/api/datastream/DataStreamReduceFunctionTestITCase.java
   
   ## Does this pull request potentially affect one of the following parts:
   
     - Dependencies (does it add or upgrade a dependency): no
     - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: no
     - The serializers: no
     - The runtime per-record code paths (performance sensitive): no
     - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Kubernetes/Yarn/Mesos, ZooKeeper: no
     - The S3 file system connector: no
   
   ## Documentation
   
     - Does this pull request introduce a new feature? no
     - If yes, how is the feature documented? not applicable
   


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[GitHub] [flink] flinkbot edited a comment on pull request #15237: [FLINK-21278][streaming-java] NullpointExecption error is reported wh…

Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on pull request #15237:
URL: https://github.com/apache/flink/pull/15237#issuecomment-800167686


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[GitHub] [flink] paul8263 commented on pull request #15237: [FLINK-21278][streaming-java] NullpointExecption error is reported wh…

Posted by GitBox <gi...@apache.org>.
paul8263 commented on pull request #15237:
URL: https://github.com/apache/flink/pull/15237#issuecomment-1033509745


   @flinkbot run azure


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[GitHub] [flink] paul8263 commented on a change in pull request #15237: [FLINK-21278][streaming-java] NullpointExecption error is reported wh…

Posted by GitBox <gi...@apache.org>.
paul8263 commented on a change in pull request #15237:
URL: https://github.com/apache/flink/pull/15237#discussion_r603821105



##########
File path: flink-tests/src/test/java/org/apache/flink/api/datastream/DataStreamReduceFunctionTestITCase.java
##########
@@ -0,0 +1,140 @@
+package org.apache.flink.api.datastream;

Review comment:
       Hi loniecc,
   I added those lines in front of the file DataStreamReduceFunctionTestITCase.java. Thank you very much.




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[GitHub] [flink] flinkbot edited a comment on pull request #15237: [FLINK-21278][streaming-java] NullpointExecption error is reported wh…

Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on pull request #15237:
URL: https://github.com/apache/flink/pull/15237#issuecomment-800167686


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[GitHub] [flink] loniecc commented on a change in pull request #15237: [FLINK-21278][streaming-java] NullpointExecption error is reported wh…

Posted by GitBox <gi...@apache.org>.
loniecc commented on a change in pull request #15237:
URL: https://github.com/apache/flink/pull/15237#discussion_r602136468



##########
File path: flink-tests/src/test/java/org/apache/flink/api/datastream/DataStreamReduceFunctionTestITCase.java
##########
@@ -0,0 +1,140 @@
+package org.apache.flink.api.datastream;

Review comment:
       hi,may be you can add this on the first line like this 
   
   ```java
   /*
    * 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.api.datastream;
   
   ....
   ```




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[GitHub] [flink] flinkbot edited a comment on pull request #15237: [FLINK-21278][streaming-java] NullpointExecption error is reported wh…

Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on pull request #15237:
URL: https://github.com/apache/flink/pull/15237#issuecomment-800167686


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[GitHub] [flink] flinkbot edited a comment on pull request #15237: [FLINK-21278][streaming-java] NullpointExecption error is reported wh…

Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on pull request #15237:
URL: https://github.com/apache/flink/pull/15237#issuecomment-800167686


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[GitHub] [flink] flinkbot edited a comment on pull request #15237: [FLINK-21278][streaming-java] NullpointExecption error is reported wh…

Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on pull request #15237:
URL: https://github.com/apache/flink/pull/15237#issuecomment-800167686


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[GitHub] [flink] flinkbot edited a comment on pull request #15237: [FLINK-21278][streaming-java] NullpointExecption error is reported wh…

Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on pull request #15237:
URL: https://github.com/apache/flink/pull/15237#issuecomment-800167686


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[GitHub] [flink] flinkbot commented on pull request #15237: [FLINK-21278][streaming-java] NullpointExecption error is reported wh…

Posted by GitBox <gi...@apache.org>.
flinkbot commented on pull request #15237:
URL: https://github.com/apache/flink/pull/15237#issuecomment-800167686


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[GitHub] [flink] loniecc commented on pull request #15237: [FLINK-21278][streaming-java] NullpointExecption error is reported wh…

Posted by GitBox <gi...@apache.org>.
loniecc commented on pull request #15237:
URL: https://github.com/apache/flink/pull/15237#issuecomment-813907208


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[GitHub] [flink] flinkbot edited a comment on pull request #15237: [FLINK-21278][streaming-java] NullpointExecption error is reported wh…

Posted by GitBox <gi...@apache.org>.
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URL: https://github.com/apache/flink/pull/15237#issuecomment-800167686


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[GitHub] [flink] flinkbot edited a comment on pull request #15237: [FLINK-21278][streaming-java] NullpointExecption error is reported wh…

Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on pull request #15237:
URL: https://github.com/apache/flink/pull/15237#issuecomment-800167686


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[GitHub] [flink] flinkbot edited a comment on pull request #15237: [FLINK-21278][streaming-java] NullpointExecption error is reported wh…

Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on pull request #15237:
URL: https://github.com/apache/flink/pull/15237#issuecomment-800167686


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[GitHub] [flink] flinkbot edited a comment on pull request #15237: [FLINK-21278][streaming-java] NullpointExecption error is reported wh…

Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on pull request #15237:
URL: https://github.com/apache/flink/pull/15237#issuecomment-800167686


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[GitHub] [flink] loniecc removed a comment on pull request #15237: [FLINK-21278][streaming-java] NullpointExecption error is reported wh…

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[GitHub] [flink] flinkbot edited a comment on pull request #15237: [FLINK-21278][streaming-java] NullpointExecption error is reported wh…

Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on pull request #15237:
URL: https://github.com/apache/flink/pull/15237#issuecomment-800167686


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[GitHub] [flink] flinkbot edited a comment on pull request #15237: [FLINK-21278][streaming-java] NullpointExecption error is reported wh…

Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on pull request #15237:
URL: https://github.com/apache/flink/pull/15237#issuecomment-800167686


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[GitHub] [flink] flinkbot edited a comment on pull request #15237: [FLINK-21278][streaming-java] NullpointExecption error is reported wh…

Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on pull request #15237:
URL: https://github.com/apache/flink/pull/15237#issuecomment-800167686


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[GitHub] [flink] loniecc removed a comment on pull request #15237: [FLINK-21278][streaming-java] NullpointExecption error is reported wh…

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[GitHub] [flink] flinkbot edited a comment on pull request #15237: [FLINK-21278][streaming-java] NullpointExecption error is reported wh…

Posted by GitBox <gi...@apache.org>.
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URL: https://github.com/apache/flink/pull/15237#issuecomment-800167686


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[GitHub] [flink] flinkbot edited a comment on pull request #15237: [FLINK-21278][streaming-java] NullpointExecption error is reported wh…

Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on pull request #15237:
URL: https://github.com/apache/flink/pull/15237#issuecomment-800167686


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[GitHub] [flink] flinkbot edited a comment on pull request #15237: [FLINK-21278][streaming-java] NullpointExecption error is reported wh…

Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on pull request #15237:
URL: https://github.com/apache/flink/pull/15237#issuecomment-800167686


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[GitHub] [flink] flinkbot edited a comment on pull request #15237: [FLINK-21278][streaming-java] NullpointExecption error is reported wh…

Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on pull request #15237:
URL: https://github.com/apache/flink/pull/15237#issuecomment-800167686


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[GitHub] [flink] flinkbot commented on pull request #15237: [FLINK-21278][streaming-java] NullpointExecption error is reported wh…

Posted by GitBox <gi...@apache.org>.
flinkbot commented on pull request #15237:
URL: https://github.com/apache/flink/pull/15237#issuecomment-800154252


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   ## Automated Checks
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    * **This pull request references an unassigned [Jira ticket](https://issues.apache.org/jira/browse/FLINK-21278).** According to the [code contribution guide](https://flink.apache.org/contributing/contribute-code.html), tickets need to be assigned before starting with the implementation work.
   
   
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[GitHub] [flink] flinkbot edited a comment on pull request #15237: [FLINK-21278][streaming-java] NullpointExecption error is reported wh…

Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on pull request #15237:
URL: https://github.com/apache/flink/pull/15237#issuecomment-800167686


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[GitHub] [flink] flinkbot edited a comment on pull request #15237: [FLINK-21278][streaming-java] NullpointExecption error is reported wh…

Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on pull request #15237:
URL: https://github.com/apache/flink/pull/15237#issuecomment-800167686


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[GitHub] [flink] loniecc commented on a change in pull request #15237: [FLINK-21278][streaming-java] NullpointExecption error is reported wh…

Posted by GitBox <gi...@apache.org>.
loniecc commented on a change in pull request #15237:
URL: https://github.com/apache/flink/pull/15237#discussion_r602136468



##########
File path: flink-tests/src/test/java/org/apache/flink/api/datastream/DataStreamReduceFunctionTestITCase.java
##########
@@ -0,0 +1,140 @@
+package org.apache.flink.api.datastream;

Review comment:
       hi,may be you can add this on the first line
   
   ```java
   /*
    * 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.
    */
   ```




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[GitHub] [flink] flinkbot edited a comment on pull request #15237: [FLINK-21278][streaming-java] NullpointExecption error is reported wh…

Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on pull request #15237:
URL: https://github.com/apache/flink/pull/15237#issuecomment-800167686


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[GitHub] [flink] paul8263 commented on pull request #15237: [FLINK-21278][streaming-java] NullpointExecption error is reported wh…

Posted by GitBox <gi...@apache.org>.
paul8263 commented on pull request #15237:
URL: https://github.com/apache/flink/pull/15237#issuecomment-899174339


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[GitHub] [flink] loniecc commented on pull request #15237: [FLINK-21278][streaming-java] NullpointExecption error is reported wh…

Posted by GitBox <gi...@apache.org>.
loniecc commented on pull request #15237:
URL: https://github.com/apache/flink/pull/15237#issuecomment-813907513


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[GitHub] [flink] flinkbot edited a comment on pull request #15237: [FLINK-21278][streaming-java] NullpointExecption error is reported wh…

Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on pull request #15237:
URL: https://github.com/apache/flink/pull/15237#issuecomment-800167686


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[GitHub] [flink] flinkbot edited a comment on pull request #15237: [FLINK-21278][streaming-java] NullpointExecption error is reported wh…

Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on pull request #15237:
URL: https://github.com/apache/flink/pull/15237#issuecomment-800167686


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[GitHub] [flink] flinkbot edited a comment on pull request #15237: [FLINK-21278][streaming-java] NullpointExecption error is reported wh…

Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on pull request #15237:
URL: https://github.com/apache/flink/pull/15237#issuecomment-800167686


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