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CronArchive.archiveSingleSite.start gets concurrently called for same site #15267

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pardvm opened this issue Dec 13, 2019 · 1 comment
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CronArchive.archiveSingleSite.start gets concurrently called for same site #15267

pardvm opened this issue Dec 13, 2019 · 1 comment
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answered For when a question was asked and we referred to forum or answered it.

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@pardvm
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pardvm commented Dec 13, 2019

In order to improve archiving performance, we have 10 cron archive tasks in our on premise Matomo installation.

It has been that way for long time with no problem at all: the cron tasks distributed the sites and all of them were archived only once.

However, we had to hook the CronArchive.archiveSingleSite.start event and, since that moment, we observe that the code in CronArchive.archiveSingleSite.start is being executed concurrently by several crons tasks.

Is there any way to avoid that concurrency?
Is there any other place, event or technique to, for each site, execute a piece of code before proceding with the archive but making sure its execution mutually excluded for the site?
@tsteur
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tsteur commented Dec 13, 2019

Have a sleep between the launch of each cron archiver... like sleep 3... if you have them in crontab you can do

sleep 3 && ...
sleep 6 && ...

@tsteur tsteur closed this as completed Dec 13, 2019
@tsteur tsteur added the answered For when a question was asked and we referred to forum or answered it. label Dec 13, 2019
@pardvm pardvm mentioned this issue Feb 11, 2020
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@tsteur tsteur mentioned this issue Apr 27, 2020
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