Igor Seliverstov created IGNITE-10730:
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Summary: MVCC TX: Batch WAL datarecords
Key: IGNITE-10730
URL: https://issues.apache.org/jira/browse/IGNITE-10730
Project: Ignite
Issue Type: Improvement
Components: mvcc
Reporter: Igor Seliverstov
on MVCC updates we make changes one by one and WAL records are written straight
after successful update under the same checkpoint lock. This produces
contention on wal flush operations and harm overall performance. But we need
only one guarantee - all the records have to be written into the log before
prepare start. That means we free to batch such writes (for example 10 rows in
one data record) it shouldn't cause memory issues but will resolve contention.
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