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# troubleshooting

Slackbot

10/13/2022, 9:59 AM

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Thomas

10/13/2022, 10:03 AM

Okay, I think I’ve just found how to configure it, using :

druid.processing.tmpDir

Laksh Singla

10/13/2022, 11:33 AM

Alternatively it can be specified by

java.io.tmpDir

(which has a lower precedence however)

Thomas

10/13/2022, 12:11 PM

Thanks @Laksh Singla for pointing this out

Thomas

10/13/2022, 2:59 PM

It looks like the priority of

druid.processing.tmpDir

over

java.io.tmpDir

is not honoured. In my

jvm.config

I have

-<http://Djava.io|Djava.io>.tmpdir=var/tmp

and in my

runtimes.properties

I have

/opt/druid/var/druid/processing

. Yet,

/opt/druid/var/druid/processing

does not even exist and I have some files in

/opt/druid/var/tmp

Thomas

10/13/2022, 3:00 PM

The safest way for now would be to set the same path on both configuration params?

Laksh Singla

10/14/2022, 3:11 AM

Thanks for reporting this, it definitely seems like a bug. Can you please share the startup properties from the logs. They should be present at the starting (and if not, https://druid.apache.org/docs/latest/configuration/index.html#startup-logging should be enabled).

Laksh Singla

10/14/2022, 3:12 AM

Beware to mask any secrets and passwords before sharing the logs 😅

Gian Merlino

10/14/2022, 10:48 PM

Important to note: the

druid.processing.tmpDir

is only for the spill-to-disk that happens during queries Other stuff will still potentially use other tmpdirs. It's like this because you may want to use different tmpdirs for different things. If you do want to change them all at once, it's best to change

java.io.tmpDir

, which is the default for all tmp dirs

Thomas

10/17/2022, 2:00 PM

Thanks Gian.

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