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From Rob Verkuylen <...@verkuylen.net>
Subject Re: very slow delete operation
Date Wed, 31 Jul 2019 18:57:25 GMT
In my experience for anything other than trivial deletes, it is much
simpler and less impactfull to either use BatchDelete or on a bigger scale
bulkload deletes into accumulo.
See:
https://accumulo.apache.org/1.7/apidocs/org/apache/accumulo/core/client/BatchDeleter.html

On Mon, Jul 29, 2019 at 11:25 PM mhd wrk <mhdwrkoffice@gmail.com> wrote:

> Invoking TableOperations.deleteRows 400 times to delete different ranges
> from a single large table (about 5 TB of data stored in 9.52K tablets and
> 544.42K entries) runs very slowly and causes timeout errors for other
> processes trying to write simultaneously into the same table. Looking into
> the "Recent Logs" of the monitor I can see warning "Not balancing due to 1
> outstanding migrations." reported 95600 times!
>
> What's the best way to troubleshoot this?
>
> Thanks
>

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