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From "Joseph Lynch (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-14822) Cassandra 4.0 doesn't output DESCRIBE TABLE representations that are valid
Date Fri, 12 Oct 2018 20:33:00 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-14822?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Joseph Lynch updated CASSANDRA-14822:
-------------------------------------
    Priority: Minor  (was: Major)

> 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: Minor
>
> Looks like right now on 4.0 the {{DESCRIBE}} output of a table is no longer valid since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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