xiaoyuyao commented on issue #665: HDDS-3160. Disable index and filter block cache for RocksDB. URL: https://github.com/apache/hadoop-ozone/pull/665#issuecomment-603963226 Thanks @elek for the additional info. That helps. I'm just curious on the bottom-right, why rocks DB suddenly had a sustained block cache write (300+MB/s) around 11:00. That explains why key creation stalled because the block cache got refreshed every seconds with a block cache size of 256MB during that period of time. Given this does not happen during the key creation earlier. This seems very likely from a RocksDB compaction, which updates the filters/indices of the SSTs.
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