Uploaded image for project: 'Spark'
  1. Spark
  2. SPARK-5685

Show warning when users open text files compressed with non-splittable algorithms like gzip

    XMLWordPrintableJSON

    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Minor
    • Resolution: Incomplete
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: Spark Core
    • Labels:

      Description

      This is a usability or user-friendliness issue.

      It's extremely common for people to load a text file compressed with gzip, process it, and then wonder why only 1 core in their cluster is doing any work.

      Some examples:

      I'm not sure how this problem can be generalized, but at the very least it would be helpful if Spark displayed some kind of warning in the common case when someone opens a gzipped file with sc.textFile.

        Attachments

          Issue Links

            Activity

              People

              • Assignee:
                Unassigned
                Reporter:
                nchammas Nicholas Chammas
              • Votes:
                0 Vote for this issue
                Watchers:
                5 Start watching this issue

                Dates

                • Created:
                  Updated:
                  Resolved: