Could I check whether anyone deploy ElasticSearch on ZFS?
We are facing some problems with our ES instance on ZFS. When indexing (and
idle mode) there seems to be high volume of reads on the drives using ZFS,
thus resulting in high iowait, low CPU utilization. However, there is very
little writes on the drives.
We also experimented putting the data directory in a non-ZFS based drive.
The performance seems much better, good CPU utilization, much higher
volumes of writes compared to reads.
Anyone have any hints of what could be wrong.
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