Github user amberarrow commented on a diff in the pull request: https://github.com/apache/incubator-apex-malhar/pull/273#discussion_r63194215 --- Diff: library/src/main/java/com/datatorrent/lib/io/fs/AbstractSingleFileOutputOperator.java --- @@ -52,6 +81,7 @@ protected String getFileName(INPUT tuple) public void setOutputFileName(String outputFileName) { this.outputFileName = outputFileName; + partitionedFileName = String.format(partitionedFileNameformat, outputFileName, physicalPartitionId); --- End diff -- Since partitionedFileName is assigned in setup() there is no need to do it here; in fact, since these setters are typically called before the operator is serialized, physicalPartitionId will always be 0 here.
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