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https://issues.apache.org/jira/browse/CASSANDRA-21157?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Stefan Miklosovic updated CASSANDRA-21157:
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Change Category: Operability
Complexity: Normal
Component/s: Feature/Compression
Assignee: Stefan Miklosovic
Priority: High (was: Normal)
Status: Open (was: Triage Needed)
> Add table_id column into system_distributed.compression_dictionaries
> --------------------------------------------------------------------
>
> Key: CASSANDRA-21157
> URL: https://issues.apache.org/jira/browse/CASSANDRA-21157
> Project: Apache Cassandra
> Issue Type: Task
> Components: Feature/Compression
> Reporter: Stefan Miklosovic
> Assignee: Stefan Miklosovic
> Priority: High
> Fix For: 5.x
>
>
> When a table is re-created, its keyspace / table name is same but their
> schema might differ. If we re-use compression dictionary for such a table
> then the compression process will effectively use a dictionary for a table it
> was not trained for. table_id will make each dictionary unique as re-creation
> of a table will yield different table id so they will not be mistaken even
> keyspace / table combo is same.
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