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https://issues.apache.org/jira/browse/CASSANDRA-20927?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Semb Wever updated CASSANDRA-20927:
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Description:
Range is left exclusive. When constructing Range, it should decrement left
position instead of incrementing right position.
Also ShardManager#rangeSpanned for (min, min] should be 1 instead of 1 token
span.
Impact is trivial: it can cause is a range to be measured to span 0 range
instead of 2^-64 (if it only contains one partition that falls on a local
ownership boundary), but this is then anyway corrected to give it a sensible
density.
The min-min case only relates to tests.
downstream patch:
https://github.com/datastax/cassandra/commit/dd5da490b5705a61b49bc6bfadf6a47a973c9804
was:
Range is left exclusive. When constructing Range, it should decrement left
position instead of incrementing right position.
Also ShardManager#rangeSpanned for (min, min] should be 1 instead of 1 token
span.
Impact is trivial: it can cause is a range to be measured to span 0 range
instead of 2^-64 (if it only contains one partition that falls on a local
ownership boundary), but this is then anyway corrected to give it a sensible
density.
The min-min case only relates to tests.
> Fix ShardManager#coveringRange to include provide partition position
> --------------------------------------------------------------------
>
> Key: CASSANDRA-20927
> URL: https://issues.apache.org/jira/browse/CASSANDRA-20927
> Project: Apache Cassandra
> Issue Type: Bug
> Components: Local/Compaction
> Reporter: Michael Semb Wever
> Priority: Normal
> Fix For: 5.0.x, 5.x
>
>
> Range is left exclusive. When constructing Range, it should decrement left
> position instead of incrementing right position.
> Also ShardManager#rangeSpanned for (min, min] should be 1 instead of 1 token
> span.
> Impact is trivial: it can cause is a range to be measured to span 0 range
> instead of 2^-64 (if it only contains one partition that falls on a local
> ownership boundary), but this is then anyway corrected to give it a sensible
> density.
> The min-min case only relates to tests.
> downstream patch:
> https://github.com/datastax/cassandra/commit/dd5da490b5705a61b49bc6bfadf6a47a973c9804
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