We are importing data to elasticsearch cluster in few indices, around ~10gb each. At the same time, we care about search on existing indices, few of them are small-~100mb, few of them are big-~10gb. In order to optimize indexing, we: use bulk api with optimized bulk size; set refresh interval to…

Elasticsearch indexing performance: throttle merging

warkolm (Mark Walkom) January 16, 2017, 2:54am 6

The best answer to those is don't disable merging as I mentioned.

Otherwise yes merges use IO, if you disable them then they won't happen and a force merge is required.

Dont disable merges?

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