Vladimir Ozerov created IGNITE-8925:
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Summary: SQL: Limit default number of threads for CREATE INDEX to 4
Key: IGNITE-8925
URL: https://issues.apache.org/jira/browse/IGNITE-8925
Project: Ignite
Issue Type: Task
Components: sql
Reporter: Vladimir Ozerov
Assignee: Vladimir Ozerov
Fix For: 2.7
Currently we allocate {{CPUs / 4}} cores for index creation. On powerful
machines we may allocate too much threads, so that "Maximum number of retries"
error start to appear in {{BPlusTree}}.
We need to limit default number of allocated cores to 4, because:
- Our original benchmarks shown that >4 cores do not give significant boost
(due to retries and page splits)
- Avoid "too much retries" error
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