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ASF GitHub Bot logged work on BEAM-7131: ---------------------------------------- Author: ASF GitHub Bot Created on: 29/May/19 21:56 Start Date: 29/May/19 21:56 Worklog Time Spent: 10m Work Description: angoenka commented on pull request #8705: Merge pull request #8558 [BEAM-7131] Spark: cache output to prevent r… URL: https://github.com/apache/beam/pull/8705 ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org Issue Time Tracking ------------------- Worklog Id: (was: 250556) Time Spent: 6h 20m (was: 6h 10m) > Spark portable runner appears to be repeating work (in TFX example) > ------------------------------------------------------------------- > > Key: BEAM-7131 > URL: https://issues.apache.org/jira/browse/BEAM-7131 > Project: Beam > Issue Type: Bug > Components: runner-spark > Reporter: Kyle Weaver > Assignee: Kyle Weaver > Priority: Major > Time Spent: 6h 20m > Remaining Estimate: 0h > > I've been trying to run the TFX Chicago taxi example [1] on the Spark > portable runner. TFDV works fine, but the preprocess step > (preprocess_flink.sh [2]) fails with the following error: > RuntimeError: AlreadyExistsError: file already exists [while running > 'WriteTransformFn/WriteTransformFn'] > Assets are being written multiple times to different temp directories, which > is okay, but the error occurs when they are copied to the same permanent > output directory. Specifically, the copy tree operation in transform_fn_io.py > [3] is run twice with the same output directory. The error doesn't occur when > that code is modified to allow overwriting existing files, but that's only a > shallow fix. While the TF transform should probably be made idempotent, this > is also an issue with the Spark runner, which shouldn't be repeating work > like this regularly (in the absence of a failure condition). > [1] [https://github.com/tensorflow/tfx/tree/master/tfx/examples/chicago_taxi] > [2] > [https://github.com/tensorflow/tfx/blob/master/tfx/examples/chicago_taxi/preprocess_flink.sh] > [3] > [https://github.com/tensorflow/transform/blob/master/tensorflow_transform/beam/tft_beam_io/transform_fn_io.py#L33-L45] -- This message was sent by Atlassian JIRA (v7.6.3#76005)