[jira] [Updated] (CASSANDRA-21157) Add table_id column into system_distributed.compression_dictionaries

["Stefan Miklosovic (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-21157?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Stefan Miklosovic updated CASSANDRA-21157:
------------------------------------------
    Fix Version/s: 5.x

> 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
>            Reporter: Stefan Miklosovic
>            Priority: Normal
>             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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