Kirill Gusakov created IGNITE-17380:
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Summary: Slow atomicMove+fsync on leader election
Key: IGNITE-17380
URL: https://issues.apache.org/jira/browse/IGNITE-17380
Project: Ignite
Issue Type: Task
Reporter: Kirill Gusakov
Attachments: new-cpu.html
On the leader election raft store meta data about new term to separate file.
This procedure takes significant amount of time according to profiler dump
(attached).
This issue slowdowns:
- leader reelection in general
- start of partitions with 1 replicas (in this case, start will consists of
syncrhonous electSelf call)
We should investigate the ways to smooth out this effect:
- switch off fsync for this operation (it needs to investigate, that
correctness will not suffer)
- store this information in rocksdb instead of file
- <find another way>
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