2014-06-25 1:23 GMT+02:00 Mark Walkom <[email protected]>:
> TPS is usually transactions per second.
Ok, thanks
>
> Are you monitoring your cluster, and your memory/heap usage?
Yes, that is what I meant with no significant load and no heavy usage
of ressources.
> How are you coming to the conclusion that it's a networking issue?
The error messages say something like connection timed out and similar.
>
> Regards,
> Mark Walkom
>
> Infrastructure Engineer
> Campaign Monitor
> email: [email protected]
> web: www.campaignmonitor.com
>
>
> On 25 June 2014 00:33, Julius K <[email protected]> wrote:
>>
>> Hi,
>>
>> I have a strange problem with ES. It's running on a cluster with 64 cores
>> etc, so I don't think the power of the hardware is the issue.
>>
>> I want to index a lot of documents with elasticsearch-hadoop.
>> After some problems I now have everything into place and it seems to work
>> fine.
>>
>> So I wrote a simple pig script which loads all the files (~500) and stores
>> them into an ES index.
>> However, after ~22h the job failed, because of connection problems between
>> the nodes.
>> But during that time, there wasn't any heavy usage of network bandwidth or
>> other ressources.
>>
>> After that I tried to run the pig script only for one document so I know
>> what is indexed and what is missing.
>> After about 3 documents indexed well doing this, the jobs started to fail
>> again, due to network problems although there wasn't any significant load.
>>
>> I observed that even after the indexing jobs stopped, there was stuff
>> happening with the index. The number of documents kept growing for quite
>> some time and the translog operations went up and down being mostly at about
>> half a million.
>>
>> For me this looks like the index takes more time indexing than the pig
>> script takes for writing into the index and after some time somewhere a
>> buffer gets too full.
>>
>> Is this possible? I would expect, that in this case elasticsearch-hadoop
>> should get throttled.
>>
>> The only documentation about the translog is what I found here:
>> http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/index-modules-translog.html
>> which I find a bit little. I still don't know what implications the number
>> of translog operations has.
>>
>> On the linked page it says, I could increase the numbers when doing bulk
>> indexing but I don't understand how this would help.
>> Also what's TPS?
>>
>> Best regards
>> Julius
>>
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