Are you talking about increase in number of threads from Hive server2
connection to your database (MySQL)?

Dr Mich Talebzadeh



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On 30 March 2016 at 22:28, Udit Mehta <ume...@groupon.com> wrote:

> Hi all,
>
> We are currently running Hive in production and staging with the metastore
> connecting to a MySql database in the backend. The traffic in production
> accessing the metastore is more than staging which is expected. We have had
> a sudden increase in traffic which has led to the metastore operation
> taking a lot longer than before. The same query on staging takes a lot less
> due to the lesser traffic on the staging cluster.
>
> We tried increasing the heap space for the metastore process as well as
> bumped up the memory for the mysql database. Both these changes did not
> seem to help much and we still see delays. Is there any other config we can
> increase to counter this increased traffic? I am looking at config for max
> threads as well but im not sure if this is the right path ahead.
>
> Im wondering if the metastore is a bottleneck here or im missing something.
>
> Looking forward to your reply,
> Udit
>

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