Sotirios Delimanolis created CASSANDRA-11429: ------------------------------------------------
Summary: DROP TABLE IF EXISTS fails against table with similar name Key: CASSANDRA-11429 URL: https://issues.apache.org/jira/browse/CASSANDRA-11429 Project: Cassandra Issue Type: Bug Components: Core Reporter: Sotirios Delimanolis We had a table named {{our_keyspace.native_address_book_uploads_cache}} (note the uploads*) which we dropped. We then created a new table named {{our_keyspace.native_address_book_upload_cache}} (note the upload*). We have a patching component that applies commands to prepare the schema using the C# driver. When we deploy, it tries to execute {noformat} DROP TABLE IF NOT EXISTS our_keyspace.native_address_book_uploads_cache; {noformat} This fails with {noformat} Caught an exception Cassandra.ServerErrorException: java.lang.RuntimeException: java.util.concurrent.ExecutionException: java.lang.RuntimeException: org.apache.cassandra.exceptions.ConfigurationException: Column family ID mismatch (found c712a590-f194-11e5-891d-2d7ca98597ba; expected b8b40ed0-f194-11e5-b481-d944f7ad0ce3) {noformat} showing the Cassandra Java exception through the C# driver. Note the {{found}} cf_id of {{c712a590-f194-11e5-891d-2d7ca98597ba}}. I can reproduce this with {{cqlsh}}. {noformat} selimanolis$ cqlsh Connected to Default Cluster at hostname:9042. [cqlsh 5.0.1 | Cassandra 2.1.13-SNAPSHOT | CQL spec 3.2.1 | Native protocol v3] Use HELP for help. cqlsh> SELECT cf_id from system.schema_columnfamilies where keyspace_name = 'our_keyspace' and columnfamily_name ='native_address_book_uploads_cache'; keyspace_name | columnfamily_name | bloom_filter_fp_chance | caching | cf_id | column_aliases | comment | compaction_strategy_class | compaction_strategy_options | comparator | compression_parameters | default_time_to_live | default_validator | dropped_columns | gc_grace_seconds | index_interval | is_dense | key_aliases | key_validator | local_read_repair_chance | max_compaction_threshold | max_index_interval | memtable_flush_period_in_ms | min_compaction_threshold | min_index_interval | read_repair_chance | speculative_retry | subcomparator | type | value_alias ---------------+-------------------+------------------------+---------+-------+----------------+---------+---------------------------+-----------------------------+------------+------------------------+----------------------+-------------------+-----------------+------------------+----------------+----------+-------------+---------------+--------------------------+--------------------------+--------------------+-----------------------------+--------------------------+--------------------+--------------------+-------------------+---------------+------+------------- (0 rows) cqlsh> SELECT cf_id from system.schema_columnfamilies where keyspace_name = 'our_keyspace' and columnfamily_name ='native_address_book_upload_cache'; cf_id -------------------------------------- c712a590-f194-11e5-891d-2d7ca98597ba (1 rows) cqlsh> drop TABLE IF EXISTS our_keyspace.native_address_book_uploads_cache; InvalidRequest: code=2200 [Invalid query] message="No keyspace has been specified. USE a keyspace, or explicitly specify keyspace.tablename" cqlsh> drop TABLE IF EXISTS our_keyspace.native_address_book_uploads_cache; ServerError: <ErrorMessage code=0000 [Server error] message="java.lang.RuntimeException: java.util.concurrent.ExecutionException: java.lang.RuntimeException: org.apache.cassandra.exceptions.ConfigurationException: Column family ID mismatch (found c712a590-f194-11e5-891d-2d7ca98597ba; expected b8b40ed0-f194-11e5-b481-d944f7ad0ce3)"> cqlsh> {noformat} The table doesn't exist. A table that has a similar name does. You'll notice that the new table has same {{cf_id}} found in the error message above. Why does Cassandra confuse the two? Our expectation is for the {{DROP TABLE IF EXISTS}} to silently succeed. Similarly, we expect a {{DROP TABLE}} to fail because the table doesn't exist. That's not what happens if you see below {noformat} cqlsh> DROP TABLE our_keyspace.native_address_book_uploads_cache; ServerError: <ErrorMessage code=0000 [Server error] message="java.lang.RuntimeException: java.util.concurrent.ExecutionException: java.lang.RuntimeException: org.apache.cassandra.exceptions.ConfigurationException: Column family ID mismatch (found c712a590-f194-11e5-891d-2d7ca98597ba; expected b8b40ed0-f194-11e5-b481-d944f7ad0ce3)"> cqlsh> DROP TABLE our_keyspace.native_address_book_uploads_cacheadsfasdf; InvalidRequest: code=2200 [Invalid query] message="unconfigured columnfamily native_address_book_uploads_cacheadsfasdf" {noformat} -- This message was sent by Atlassian JIRA (v6.3.4#6332)