[IAS TSDB Backdate Poster] - The backdate poster ran without inserting, , queue size: 73
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
cmusselm last edited by
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.
MattFox 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.
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.