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    [IAS TSDB Backdate Poster] - The backdate poster ran without inserting, , queue size: 73

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    • MattFoxM
      MattFox
      last edited by MattFox

      What does this mean. Does it mean I haven't got data going in???
      This all relates to the data file data sources

      Do not follow where the path may lead; go instead where there is no path.
      And leave a trail - Muriel Strode

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      • cmusselmC
        cmusselm
        last edited by

        Hey, Matt,

        Did you ever get any insight into this? I'm seeing the same thing in my ma.log, although my queue size is only 2.

        Thanks,
        Chad

        MattFoxM 1 Reply Last reply Reply Quote 0
        • MattFoxM
          MattFox @cmusselm
          last edited by

          @cmusselm no unfortunately. Things are pretty dead in the forums now and without paid support it's all pretty dead in the water.

          Do not follow where the path may lead; go instead where there is no path.
          And leave a trail - Muriel Strode

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          • Jared WiltshireJ
            Jared Wiltshire
            last edited by

            @MattFox What it means is this:
            The mangoNoSql module (IasTsdb) is trying to insert backdated values (that is values with timestamps which are older than those already contained in the series and saved to disk)
            This is an expensive operation as it must rewrite the entire shard.
            The TSDB queues the values in memory and tries to write them all out to the shard asynchronously.
            Sometimes when this "backdate poster" thread tries to write the backdated values out the shard is already locked (due to a data source writing current values to the shard), resulting in messages like this.

            Developer at Radix IoT

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