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[BEAM-1392] DoFn teardown not called on empty partitions #1920

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[BEAM-1392] DoFn teardown not called on empty partitions #1920

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2 changes: 2 additions & 0 deletions ...rs/spark/src/main/java/org/apache/beam/runners/spark/translation/SparkProcessContext.java
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Original file line number Diff line number Diff line change
Expand Up @@ -62,8 +62,10 @@ Iterable<OutputT> processPartition(

// skip if partition is empty.
if (!partition.hasNext()) {
DoFnInvokers.invokerFor(doFn).invokeTeardown();
return Lists.newArrayList();
}

// call startBundle() before beginning to process the partition.
doFnRunner.startBundle();
// process the partition; finishBundle() is called from within the output iterator.
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