Delete by query and index performance

Elastic Stack Elasticsearch
1

I have data in an ES index that dynamically changes. Various documents may
be deleted at any time and new ones are always being created.
Using the "delete by query" works perfectly to handle the deletes, but I've
read that this can be detrimental to index performance and I've stated to
see poor performance.

How detrimental is delete by query to an index and is there any way to
repair it? Does a optimize/forcemerge help with this problem?

ThTHanks!

--
You received this message because you are subscribed to the Google Groups "elasticsearch" group.
To unsubscribe from this group and stop receiving emails from it, send an email to elasticsearch+unsubscribe@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/elasticsearch/a8f17206-6c98-4258-9453-cc0f04d26c1d%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

2

Optimize/force merge does not help. It will only add load. If search times
increase, and deletes were massive, you should consider optimize. But not
too often, maybe once per hour.

Deleting single documents is expensive by nature of the algorithm, there is
no "repair".

Jörg

On Mon, Nov 24, 2014 at 3:09 PM, BradVido bradyvidovic@gmail.com wrote:

I have data in an ES index that dynamically changes. Various documents may
be deleted at any time and new ones are always being created.
Using the "delete by query" works perfectly to handle the deletes, but
I've read that this can be detrimental to index performance and I've stated
to see poor performance.

How detrimental is delete by query to an index and is there any way to
repair it? Does a optimize/forcemerge help with this problem?

ThTHanks!

--
You received this message because you are subscribed to the Google Groups
"elasticsearch" group.
To unsubscribe from this group and stop receiving emails from it, send an
email to elasticsearch+unsubscribe@googlegroups.com.
To view this discussion on the web visit
https://groups.google.com/d/msgid/elasticsearch/a8f17206-6c98-4258-9453-cc0f04d26c1d%40googlegroups.com
https://groups.google.com/d/msgid/elasticsearch/a8f17206-6c98-4258-9453-cc0f04d26c1d%40googlegroups.com?utm_medium=email&utm_source=footer
.
For more options, visit https://groups.google.com/d/optout.

--
You received this message because you are subscribed to the Google Groups "elasticsearch" group.
To unsubscribe from this group and stop receiving emails from it, send an email to elasticsearch+unsubscribe@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/elasticsearch/CAKdsXoEAFz78fGkjb9NsOO%2Be1Bbaj9e0S9DvRXANouaxk3SFgg%40mail.gmail.com.
For more options, visit https://groups.google.com/d/optout.

3

Aren't optimize and forcemerge the same thing?

--
You received this message because you are subscribed to the Google Groups "elasticsearch" group.
To unsubscribe from this group and stop receiving emails from it, send an email to elasticsearch+unsubscribe@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/elasticsearch/211286ed-dd15-43bb-89c9-5fe8baa1ca8e%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.