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https://issues.apache.org/jira/browse/CASSANDRA-19747?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Brandon Williams updated CASSANDRA-19747:
-----------------------------------------
     Bug Category: Parent values: Correctness(12982)Level 1 values: Recoverable 
Corruption / Loss(12986)
       Complexity: Normal
      Component/s: Local/Snapshots
    Discovered By: User Report
    Fix Version/s: 4.1.x
                   5.0.x
                   5.x
         Severity: Normal
           Status: Open  (was: Triage Needed)

> Invalid schema.cql created by snapshot after dropping more than one field
> -------------------------------------------------------------------------
>
>                 Key: CASSANDRA-19747
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-19747
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Local/Snapshots
>            Reporter: Frank vissing
>            Priority: Normal
>             Fix For: 4.1.x, 5.0.x, 5.x
>
>
> After dropping at least 2 fields the schema.cql produced by _nodetool 
> snapshot_ is invalid (it is missing a comma)
> {code:sql}
> CREATE TABLE IF NOT EXISTS test.testtable (
>     field1 text PRIMARY KEY,
>     field2 text
>     field3 text
> ) WITH ID ...{code}
> expected outcome
> {code:sql}
> CREATE TABLE IF NOT EXISTS test.testtable (
>     field1 text PRIMARY KEY,
>     field2 text,
>     field3 text
> ) WITH ID ...{code}
> reproducing the isue is simple by running the following commands
> {code:sh}
> docker run -d --name cassandra cassandra:4.1.5
> echo "Wait for the container to start"
> until docker exec -ti cassandra nodetool status | grep UN;do sleep 
> 1;done;sleep 10
> echo "Create keyspace and table for test"
> docker exec -ti cassandra cqlsh -e "CREATE KEYSPACE IF NOT EXISTS test WITH 
> replication = {'class': 'SimpleStrategy', 'replication_factor': '1'}; CREATE 
> TABLE IF NOT EXISTS test.testtable (field1 text PRIMARY KEY,field2 
> text,field3 text);"
> echo "Drop 2 fields"
> docker exec -ti cassandra cqlsh -e "ALTER TABLE test.testtable DROP (field2, 
> field3);"
> echo "Create snapshot and view schema.cql"
> docker exec -ti cassandra /opt/cassandra/bin/nodetool snapshot -t my_snapshot
> docker exec -ti cassandra find /var/lib/cassandra/data -name schema.cql  
> -exec cat {} +   {code}
> the full output of the sql generated by the reproduce is below
> {code:sql}
> CREATE TABLE IF NOT EXISTS test.testtable (
>     field1 text PRIMARY KEY,
>     field2 text
>     field3 text
> ) WITH ID = 0e9aa540-391f-11ef-945e-0be1221ff441
>     AND additional_write_policy = '99p'
>     AND bloom_filter_fp_chance = 0.01
>     AND caching = {'keys': 'ALL', 'rows_per_partition': 'NONE'}
>     AND cdc = false
>     AND comment = ''
>     AND compaction = {'class': 
> 'org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy', 
> 'max_threshold': '32', 'min_threshold': '4'}
>     AND compression = {'chunk_length_in_kb': '16', 'class': 
> 'org.apache.cassandra.io.compress.LZ4Compressor'}
>     AND memtable = 'default'
>     AND crc_check_chance = 1.0
>     AND default_time_to_live = 0
>     AND extensions = {}
>     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 = 'BLOCKING'
>     AND speculative_retry = '99p';
> ALTER TABLE test.testtable DROP field2 USING TIMESTAMP 1719999102807000;
> ALTER TABLE test.testtable DROP field3 USING TIMESTAMP 1719999102807001;
> {code}
> Found this bug while trying to restore the schema from a backup  created by 
> copying a snapshot from a running node.



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