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Posted to issues@ignite.apache.org by "Pavel Kovalenko (Jira)" <ji...@apache.org> on 2019/10/17 10:48:00 UTC
[jira] [Created] (IGNITE-12299) Store tombstone links into separate
BPlus tree to avoid partition full-scan during tombstones remove
Pavel Kovalenko created IGNITE-12299:
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Summary: Store tombstone links into separate BPlus tree to avoid partition full-scan during tombstones remove
Key: IGNITE-12299
URL: https://issues.apache.org/jira/browse/IGNITE-12299
Project: Ignite
Issue Type: Improvement
Components: cache
Affects Versions: 2.8
Reporter: Pavel Kovalenko
Fix For: 2.9
Currently, we can't identify which keys are tombstones in the partition fastly. To collect tombstones we need to make a full-scan BPlus tree. It can slowdown node performance when rebalance is finished and tombstones cleanup is needed. We can introduce a separate BPlus tree (like for TTL) inside partition where we can store links to tombstone keys. When tombstones cleanup is needed we can make a fast scan for tombstones using the only a subset of the keys stored to this tree.
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