Re: [geomesa-users] Accumulo Data Store has memory leak problem.

[Jim Hughes <jnh5y@xxxxxxxx>]

Hi Takashi,

Thanks for the issue report.  The release notes for the Parser 
Combinator Library indicate that it is binary compatible, so the 
solution is going to be to manage the version of the library.  I've 
created a branch here: 
https://github.com/locationtech/geomesa/tree/scala-parsers-1.0.5. We'll 
get this change merged in GeoMesa 1.3.1 (which is due out within the 
next week).

Have you had a chance to test changing the library in your environment?

If you are interested in a short-term fix, you could cherry-pick the 
commit from the above branch to the tag for GeoMesa 1.3.0 and build just 
the distributed runtime jar.  If you want to test with that branch, you 
would likely need to upgrade your query clients as well.

Are you using Accumulo 1.7.2 or later with namespaces?  If the GeoMesa 
Accumulo iterators are deployed via HDFS, you should be able to replace 
the distributed runtime jar with an updated one and see a memory 
improvement.

Cheers,

Jim

On 3/2/2017 12:16 AM, Takashi Sasaki wrote:
> Hello,
>
> We use GeoMesa-1.3.0 Accumulo Data Store.
>
> Accumulo Tablet Server crash sometimes.
>
> Investigating server by Visal VM , Scala Standard Parser Combinator
> Library used large heap size which is gradually increased.
>
> It seemed to be memory leak problem because GeoMesa use Scala Standard
> Parser Combinator Library version 1.0.4.
>
> The library latest version is 1.0.5 contains bug fix of memory leak.
> https://github.com/scala/scala-parser-combinators/releases/tag/v1.0.5
>
> If this isn't known issue of GeoMesa, we hope to version up of the
> library in near future.
>
> Thanks,
>
> Takashi
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