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https://issues.apache.org/jira/browse/FLINK-11140?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16718811#comment-16718811
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ASF GitHub Bot commented on FLINK-11140:
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zentol commented on issue #7287: [FLINK-11140][streaming] Fix empty child path
check in Buckets
URL: https://github.com/apache/flink/pull/7287#issuecomment-446552229
Oh for heaven's sake this is one of our classes isn't it. god damn it.
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> Can not create a Path from an empty string while use BasePathBucketAssigner
> ---------------------------------------------------------------------------
>
> Key: FLINK-11140
> URL: https://issues.apache.org/jira/browse/FLINK-11140
> Project: Flink
> Issue Type: Bug
> Components: Streaming
> Reporter: Matrix42
> Assignee: Matrix42
> Priority: Major
> Labels: pull-request-available
>
> while use BasePathBucketAssigner, Flink throw an exception:
> {code:java}
> Caused by: java.lang.IllegalArgumentException: Can not create a Path from an
> empty string
> at org.apache.flink.core.fs.Path.checkAndTrimPathArg(Path.java:168)
> at org.apache.flink.core.fs.Path.<init>(Path.java:181)
> at org.apache.flink.core.fs.Path.<init>(Path.java:108)
> at
> org.apache.flink.streaming.api.functions.sink.filesystem.Buckets.assembleBucketPath(Buckets.java:309)
> at
> org.apache.flink.streaming.api.functions.sink.filesystem.Buckets.getOrCreateBucketForBucketId(Buckets.java:278)
> at
> org.apache.flink.streaming.api.functions.sink.filesystem.Buckets.onElement(Buckets.java:265)
> at
> org.apache.flink.streaming.api.functions.sink.filesystem.StreamingFileSink.invoke(StreamingFileSink.java:370)
> at
> org.apache.flink.streaming.api.operators.StreamSink.processElement(StreamSink.java:56)
> at
> org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.pushToOperator(OperatorChain.java:579)
> at
> org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.collect(OperatorChain.java:554)
> at
> org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.collect(OperatorChain.java:534)
> at
> org.apache.flink.streaming.api.operators.AbstractStreamOperator$CountingOutput.collect(AbstractStreamOperator.java:718)
> at
> org.apache.flink.streaming.api.operators.AbstractStreamOperator$CountingOutput.collect(AbstractStreamOperator.java:696)
> at
> org.apache.flink.streaming.api.operators.StreamSourceContexts$NonTimestampContext.collect(StreamSourceContexts.java:104)
> at
> org.apache.flink.streaming.api.functions.source.FromElementsFunction.run(FromElementsFunction.java:164)
> at
> org.apache.flink.streaming.api.operators.StreamSource.run(StreamSource.java:94)
> at
> org.apache.flink.streaming.api.operators.StreamSource.run(StreamSource.java:58)
> at
> org.apache.flink.streaming.runtime.tasks.SourceStreamTask.run(SourceStreamTask.java:99)
> at
> org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:300)
> at org.apache.flink.runtime.taskmanager.Task.run(Task.java:704)
> at java.lang.Thread.run(Thread.java:748)
> {code}
> reason:
> BasePathBucketAssigner#getBucketId return an empty string.
> {code:java}
> @Override
> public String getBucketId(T element, BucketAssigner.Context context) {
> return "";
> }
> {code}
> while construct a Path, checkAndTrimPathArg methoad will check pathString, if
> pathString is empty will throw IllegalArgumentException.
> {code:java}
> public Path(String pathString) {
> pathString = checkAndTrimPathArg(pathString);
> ......
> }{code}
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