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  1. Accumulo
  2. ACCUMULO-2481

Monitor should still work if HDFS + Zookeeper go away

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Details

    • Bug
    • Status: Resolved
    • Minor
    • Resolution: Fixed
    • 1.4.4, 1.4.5, 1.5.1, 1.6.0
    • 2.0.0
    • monitor
    • None

    • 1.4.5-SNAPSHOT on CDH4.5.0.

      Non-HA cluster with 2 workers and a single Zookeeper server.

    Description

      While preparing to update a test cluster, I accidentally attempted to refresh some monitor pages after I had shut down the underlying HDFS and Zookeeper services. The page simply hung. I've since tried loading several different pages (overview, logs, master view) and all simple hang on the monitor's end. If I restart the underlying cluster, the pages resolve like normal.

      I haven't had a chance to see if this happens on later versions, nor figure out which missing component matters.

      Expected behavior would be for the monitor to still load, albeit with a bunch of alarm bells about everything being off.

      Attachments

        Issue Links

          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. ACCUMULO-1723 monitor service GET / hangs if Zookeeper down

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Resolved
          relates to

          Improvement - An improvement or enhancement to an existing feature or task. ACCUMULO-3034 Improve the Monitor

          • Major - Major loss of function.
          • Resolved

          Activity

            People

              agwells Andrew George Wells
              busbey Sean Busbey
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              Dates

                Created:
                Updated:
                Resolved: