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https://issues.apache.org/jira/browse/CASSANDRA-20522?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Benedict Elliott Smith updated CASSANDRA-20522:
-----------------------------------------------
    Resolution: Fixed
        Status: Resolved  (was: Triage Needed)

> Accord: Various fixes
> ---------------------
>
>                 Key: CASSANDRA-20522
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-20522
>             Project: Apache Cassandra
>          Issue Type: Bug
>          Components: Accord
>            Reporter: Benedict Elliott Smith
>            Priority: Normal
>
> Improve:
>     - Rename AsyncChain.addCallback to invoke
>      - short circuit AbstractRanges.equals()
>     - add Seekables.indexOf to support faster serialization
>      - unboxed Invariant.requires variant
>      - InMemoryJournal compaction should simulate files to ensure we compact 
> the same cohorts of records (so shadowing applied correctly)
>      - Don't update CFK deps if already known
>     - avoid unnecessary heapification of LogGroupTimers
>      - begin removal of Guava (mostly unused)
> Fix:
>      - If PreLoadContext cannot acquire shared caches, still consider 
> existing contents
>      - ReadTracker must slice Minimal the first unavailable collection
>      - only skip Dep calculation on PreAccept if vote is required by 
> coordinator
>      - Recovery must wait for earlier transactions on shards that have not 
> yet been accepted, even if we recover a fast Stable record on another shard
>      - Handle edge case where we can take fast/medium path but one of the 
> Deps replies contains a future TxnId
>      - Failed task stops DelayedCommandStore task queue processing further 
> tasks
>      - CFK: make sure to insert UNSTABLE into missing array
>      - update executeAtEpoch when retryInFutureEpoch
>      - consider medium path on fast path delayed



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