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Posted to issues@ozone.apache.org by GitBox <gi...@apache.org> on 2020/09/15 03:34:08 UTC
[GitHub] [hadoop-ozone] captainzmc edited a comment on pull request #1296: HDDS-4053. Volume space: add quotaUsageInBytes and update it when write and delete key.
captainzmc edited a comment on pull request #1296:
URL: https://github.com/apache/hadoop-ozone/pull/1296#issuecomment-692424807
> Thanks @captainzmc for working on this. The patch LGTM, +1. Only concern I have is the cost of volume usage update per key write/delete. If you can post the perf diff with/wo update using freon, that will be great.
Thanks for @xiaoyuyao 's review. Here are the freon test results:
Using 10-100 threads to write data to different buckets under the same volume, adding quota Usage has little impact on performance. (LongAdder disperses the concurrency of a single cell to each cell, improving concurrency efficiency compared to atomicLong). In my test, I used three virtual machines, each with a key size of 10K.
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