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From Jacques Nadeau <jacq...@apache.org>
Subject Re: [Java] Increase memory limit
Date Thu, 06 Feb 2020 19:44:58 GMT
Great, good luck on your use case!

On Thu, Feb 6, 2020 at 11:35 AM Justin Polchlopek <jpolchlopek@azavea.com>
wrote:

> Great.  That works.  I should have checked something like this first.
> Thanks.
>
> On Thu, Feb 6, 2020 at 1:34 PM Jacques Nadeau <jacques@apache.org> wrote:
>
>> The jvm imposes a limit as well. The value you pass into the allocators
>> only matters if it is below the jvm setting. You'll need to change the jvm
>> setting via -XX:MaxDirectMemorySize=<size>
>>
>> https://www.eclipse.org/openj9/docs/xxmaxdirectmemorysize/
>>
>> On Thu, Feb 6, 2020 at 9:56 AM Justin Polchlopek <jpolchlopek@azavea.com>
>> wrote:
>>
>>> Hi,
>>>
>>> I've been using Arrow Vectors as the underlying storage of some objects
>>> to assist in the transmission of those objects, but as I am scaling up my
>>> examples, I'm very quickly running into OOM errors.  Specifically
>>>
>>> Caused by: io.netty.util.internal.OutOfDirectMemoryError: failed to allocate
16777216 byte(s) of direct memory (used: 939524096, max: 954728448)
>>>
>>> I'm a bit surprised.  The allocator managing the vectors is given by
>>>
>>> val allocator = new RootAllocator(Long.MaxValue)
>>>
>>> (I'm using the Java libs via Scala.)  I would expect to have more than 1GB available
given that construction, but it looks like we're substantially memory-constrained.
>>>
>>> What can I do to increase the available pool of memory?
>>>
>>> Thanks
>>>
>>> -Justin
>>>
>>>

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