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  1. HBase
  2. HBASE-2889

Tool to look at HLogs -- parse and tail -f

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Details

    • Bug
    • Status: Closed
    • Major
    • Resolution: Later
    • None
    • None
    • wal
    • None

    Description

      We need a tool for looking at wals. A tail -f would be sweet though it might be ugly having to open each time it wants to dump next lot of edits out wal log.

      From Kannan:

      20:45 <kannan> WALEdit already has a toString().
20:46 <kannan> And append/sync support allows you to read concurrently a file that is being written too... (like JDs replication).
20:46 <kannan> So it would be good if I could do a bin/hbase hlogprint -f hdfs://...../.logs/<filename> -v -p
20:46 <kannan> much like the HFile pretty printer... except the HLog one is effectively a tail -f.

      Attachments

        1. HBASE-2889_2.patch
          2 kB
          Nicolas Spiegelberg
        2. 2889.txt
          7 kB
          Michael Stack

        Issue Links

          is related to

          Bug - A problem which impairs or prevents the functions of the product. HBASE-2643 Figure how to deal with eof splitting logs

          • Blocker - Blocks development and/or testing work, production could not run
          • Closed

          Improvement - An improvement or enhancement to an existing feature or task. HBASE-2055 Serialize WAL as Avro records

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

          Bug - A problem which impairs or prevents the functions of the product. HBASE-2961 Close zookeeper when done with it (HCM, Master, and RS)

          • Major - Major loss of function.
          • Closed

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              stack Michael Stack
              stack Michael Stack
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              Dates

                Created:
                Updated:
                Resolved: