question Re: Is it safe to reduce 'Heap dump directory free space' absolute/percentage thresholds ? in Support Questions

Is it safe to reduce 'Heap dump directory free space' absolute/percentage thresholds ?

Mike_CHU44 — Tue, 21 Apr 2026 06:29:44 GMT

Hello.

We are running CDP 7.1.7 and we have warning concerning 'Heap Dump Directory Free Space' :

This role's Heap Dump Directory is on a filesystem with less than 5.0 GiB of its space free. /tmp (free: 3.7 GiB (94.74%), capacity: 3.9 GiB)

Our filesystem is small :

Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vg_sys-lvtmp 3.9G 8.5M 3.7G 1% /tmp

Is it safe to reduce the threshold ?

Currently, Warning is set to 5 GiB and Critical is set to 3 GiB .

Or is it better / safer to increase /tmp filesystem size ?

Because /tmp is also used for storing Event server and Host monitor data and when are also facing free space warning message .

Regards

Re: Is it safe to reduce 'Heap dump directory free space' absolute/percentage thresholds ?

M_Rahi — Tue, 11 Jun 2024 04:56:28 GMT

Hello @Mike_CHU44

> Can you run a "df -h /tmp" and validate from filesystem for content that could be cleaned?

> By default, the Role uses "/tmp" for -XX:HeapDumpPath. Your Team need to change the Value set for -XX:HeapDumpPath to a Mount, wherein your Team have Sufficient Space.

> It is recommended to maintain sufficient free space in the heap dump directory to ensure the proper functioning and troubleshooting of the system.

Regards,
Rahi

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Re: Is it safe to reduce 'Heap dump directory free space' absolute/percentage thresholds ?

DianaTorres — Mon, 24 Jun 2024 18:27:41 GMT

@Mike_CHU44 Has the reply helped resolve your issue? If so, please mark the appropriate reply as the solution, as it will make it easier for others to find the answer in the future. Thanks.