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Robert Stupp commented on CASSANDRA-14871: ------------------------------------------ [~bdeggleston], thank you! Will take a look. > Severe concurrency issues in STCS,DTCS,TWCS,TMD.Topology,TypeParser > ------------------------------------------------------------------- > > Key: CASSANDRA-14871 > URL: https://issues.apache.org/jira/browse/CASSANDRA-14871 > Project: Cassandra > Issue Type: Bug > Components: Core > Reporter: Robert Stupp > Assignee: Robert Stupp > Priority: Critical > Fix For: 4.0, 3.0.x, 3.11.x > > > There are a couple of places in the code base that do not respect that > j.u.HashMap + related classes are not thread safe and some parts rely on > internals of the implementation of HM, which can change. > We have observed failures like {{NullPointerException}} and > {{ConcurrentModificationException}} as well as wrong behavior. > Affected areas in the code base: > * {{SizeTieredCompactionStrategy}} > * {{DateTieredCompactionStrategy}} > * {{TimeWindowCompactionStrategy}} > * {{TokenMetadata.Topology}} > * {{TypeParser}} > * streaming / concurrent access to {{LifecycleTransaction}} (handled in > CASSANDRA-14554) > While the patches for the compaction strategies + {{TypeParser}} are pretty > straight forward, the patch for {{TokenMetadata.Topology}} requires it to be > made immutable. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@cassandra.apache.org For additional commands, e-mail: commits-h...@cassandra.apache.org