Thanks for the response. However, you can't switch merge policies on the
fly though if I'm not mistaken; if I remember right that definitely
requires closing/reopening an index. From the docs
<http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/indices-update-settings.html>,
"A different merge policy can't be set."
I went ahead and tested it via the index _settings API:
curl -XPUT localhost:9200/my_index/_settings -d '{
"index": {
"merge.policy.type": "log_doc"
}
}'
{"error":"ElasticsearchIllegalArgumentException[Can't update non dynamic
settings[[index.merge.policy.type]] for open
indices[[my_index_20140709]]]","status":400}
Am I missing something?
On Friday, October 10, 2014 7:18:40 AM UTC-4, Nikolas Everett wrote:
>
> You could try switching merge policies and then switching back. I never
> tried that but I think it might work.
>
> Nik
> On Oct 10, 2014 12:33 AM, "Jonathan Foy" <[email protected] <javascript:>>
> wrote:
>
>> Hello
>>
>> Is there any way of changing the merge settings of a live index without
>> downtime in ES versions prior to 1.4 (I'm on 1.1.1)?
>>
>> After toying with some of the settings for quite a while (such as
>> index.merge.policy.expunge_deletes_allowed and
>> index.merge.policy.max_merge_at_once_explicit) I had come to the
>> conclusion that they were NOT updating dynamically. A dive into the code,
>> which also led to this issue
>> <https://github.com/elasticsearch/elasticsearch/issues/7699>, seems to
>> indicate that prior to 1.4 merge settings are not really dynamically
>> updateable, and instead would require restarting, closing/reopening an
>> index, or perhaps relocating shards (the updated values are stored, but
>> never seem to be applied). I'm looking in TieredMergePolicyProvider to get
>> this information.
>>
>> I'm planning on trying to update our cluster to 1.4 once it's stable, but
>> until then it would be helpful to be able to tweak these settings as part
>> of my battle against deleted document creep. So, am I missing something
>> here, or is simply not possible right now?
>>
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