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https://issues.apache.org/jira/browse/CASSANDRA-14822?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16648406#comment-16648406
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Joseph Lynch commented on CASSANDRA-14822:
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Looks like the in tree driver has been changed but the vendored python driver
in lib has not yet? Probably needs to be a follow up on the python driver to
stop outputting it in the first place. I still think the server needs to be
able to handle it in case folks have automation that e.g. runs DESCRIBE in one
place and tries to apply those tables elsewhere (for example to check that
schemata on the real cluster match those in a source of truth).
> Cassandra 4.0 doesn't output DESCRIBE TABLE representations that are valid
> ---------------------------------------------------------------------------
>
> Key: CASSANDRA-14822
> URL: https://issues.apache.org/jira/browse/CASSANDRA-14822
> Project: Cassandra
> Issue Type: Bug
> Reporter: Joseph Lynch
> Priority: Major
>
> Looks like right now on 4.0 the {{DESCRIBE}} output of a table is no longer
> valid since {{dclocal_read_repair_chance}} was removed:
> {noformat}
> cqlsh> CREATE KEYSPACE test WITH replication = {'class': 'SimpleStrategy',
> 'replication_factor': 1};
> cqlsh> CREATE TABLE test.test (key text, value text, PRIMARY KEY(key));
> cqlsh> DESCRIBE TABLE test.test
> CREATE TABLE test.test (
> key text PRIMARY KEY,
> value text
> ) WITH bloom_filter_fp_chance = 0.01
> AND caching = {'keys': 'ALL', 'rows_per_partition': 'NONE'}
> AND comment = ''
> AND compaction = {'class':
> 'org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy',
> 'max_threshold': '32', 'min_threshold': '4'}
> AND compression = {'chunk_length_in_kb': '64', 'class':
> 'org.apache.cassandra.io.compress.LZ4Compressor'}
> AND crc_check_chance = 1.0
> AND dclocal_read_repair_chance = 0.0
> AND default_time_to_live = 0
> AND gc_grace_seconds = 864000
> AND max_index_interval = 2048
> AND memtable_flush_period_in_ms = 0
> AND min_index_interval = 128
> AND read_repair_chance = 0.0
> AND speculative_retry = '99p';
> {noformat}
> If you then try to copy and past that output it fails:
> {noformat}
> cqlsh> CREATE TABLE test.test2 (
> ... key text PRIMARY KEY,
> ... value text
> ... ) WITH bloom_filter_fp_chance = 0.01
> ... AND caching = {'keys': 'ALL', 'rows_per_partition': 'NONE'}
> ... AND comment = ''
> ... AND compaction = {'class':
> 'org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy',
> 'max_threshold': '32', 'min_threshold': '4'}
> ... AND compression = {'chunk_length_in_kb': '64', 'class':
> 'org.apache.cassandra.io.compress.LZ4Compressor'}
> ... AND crc_check_chance = 1.0
> ... AND dclocal_read_repair_chance = 0.0
> ... AND default_time_to_live = 0
> ... AND gc_grace_seconds = 864000
> ... AND max_index_interval = 2048
> ... AND memtable_flush_period_in_ms = 0
> ... AND min_index_interval = 128
> ... AND read_repair_chance = 0.0
> ... AND speculative_retry = '99p';
> SyntaxException: Unknown property 'dclocal_read_repair_chance'
> {noformat}
> Currently we leave in {{dclocal_read_repair_chance}} and
> {{read_repair_chance}} for the drivers per the comments left during
> CASSANDRA-13910.
> I think we can just ignore those parameters in the validation/creation.
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