[Postgres-xl-general] Invalid memory alloc request size

Aaron Jackson ajackson at revionics.com
Wed Sep 24 21:05:39 PDT 2014

The working mem was originally 100MB.  When I saw this error, I increased it to 1GB to try to alleviate the error.  Unfortunately, I got the error in both cases but I will try again.

From: Mason Sharp [msharp at translattice.com]
Sent: Wednesday, September 24, 2014 5:31 PM
To: Aaron Jackson
Cc: Pavan Deolasee; postgres-xl-general at lists.sourceforge.net
Subject: Re: [Postgres-xl-general] Invalid memory alloc request size

On Mon, Sep 22, 2014 at 9:49 AM, Aaron Jackson <ajackson at revionics.com<mailto:ajackson at revionics.com>> wrote:
Yes, it appears (or at least is highly correlated) to be related to the size of the table - 60M rows  So, I dumped the table, truncated the table, added the node and then reloaded - no issues.

Do you mind retrying with a smaller work_mem size? I believe you said you set yours for 1GB. When redistributing, it will use a size of work_mem internally. 1 GB happens to be 1073741824 bytes, and that error message gets triggered at 1GB - 1 byte.

I think the fix here is for us to cap this to be below 1 GB if work_mem is too high.


Mason Sharp

TransLattice - http://www.translattice.com<http://www.translattice.com/>
Clustered and Distributed Database Solutions

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