[CASSANDRA-11055] C*2.1 cqlsh DESCRIBE KEYSPACE ( or TABLE ) returns 'NoneType' object has no attribute 'replace'

• Type: Bug
• Status: Resolved
• Priority: Normal
• Resolution: Fixed
• Fix Version/s: 2.1.15
• Component/s: Legacy/Tools
• Labels: cqlsh
• Severity: Normal
• Assignee: Stefania Alborghetti
• Reporter: Simon Ashley

Authors

Stefania Alborghetti

Reviewers

Adam Holmberg

• Created: 21/Jan/16 13:56
• Updated: 16/Apr/19 09:30
• Resolved: 02/Jun/16 12:13

Description

C* 2.1 cqlsh DESCRIBE KEYSPACE ( or TABLE ) returns:

 'NoneType' object has no attribute 'replace' 

for thrift CF's originally created in C* 1.2.

Repro:

1. Create cf in cassandra-cli on C* 1.2.x (1.2.9 was used here)

[default@ks1] CREATE COLUMN FAMILY t1
...	WITH column_type='Standard'
...	AND comparator='CompositeType(org.apache.cassandra.db.marshal.UTF8Type,org.apache.cassandra.db.marshal.UTF8Type)'
...	AND default_validation_class='UTF8Type'
...	AND key_validation_class='UTF8Type'
...	AND read_repair_chance=0.1
...	AND dclocal_read_repair_chance=0.0
...	AND gc_grace=864000
...	AND min_compaction_threshold=4
...	AND max_compaction_threshold=32
...	AND replicate_on_write=true
...	AND compaction_strategy='LeveledCompactionStrategy' AND compaction_strategy_options={sstable_size_in_mb: 32}
...	AND caching='KEYS_ONLY'
...	AND compression_options={sstable_compression:SnappyCompressor, chunk_length_kb:64};

qlsh> describe keyspace ks1;

CREATE KEYSPACE ks1 WITH replication = {
  'class': 'NetworkTopologyStrategy',
  'datacenter1': '1'
};

USE ks1;

CREATE TABLE t1 (
  key text,
  column1 text,
  column2 text,
  value text,
  PRIMARY KEY (key, column1, column2)
) WITH COMPACT STORAGE AND
  bloom_filter_fp_chance=0.100000 AND
  caching='KEYS_ONLY' AND
  comment='' AND
  dclocal_read_repair_chance=0.000000 AND
  gc_grace_seconds=864000 AND
  read_repair_chance=0.100000 AND
  replicate_on_write='true' AND
  populate_io_cache_on_flush='false' AND
  compaction={'sstable_size_in_mb': '32', 'class': 'LeveledCompactionStrategy'} AND
  compression={'chunk_length_kb': '64', 'sstable_compression': 'SnappyCompressor'};


cqlsh> select keyspace_name, columnfamily_name,column_aliases,key_aliases from system.schema_columnfamilies where keyspace_name= 'ks1';

 keyspace_name | columnfamily_name | column_aliases | key_aliases
---------------+-------------------+----------------+-------------
           ks1 |                t1 |             [] |          []


2/ Upgrade -> C* 2.0.9 -> nodetool upgradesstables -a

At this stage , DESCRIBE in cqlsh is working

3/ Upgrade -> C* 2.1.12 -> nodetool upgradesstables -a

DESCRIBE now fails:

cqlsh> describe table ks1.t1;
'NoneType' object has no attribute 'replace'

cqlsh> describe keyspace ks1;
'NoneType' object has no attribute 'replace'

You can workaround by manually updating system.schema_columnfamilies

 UPDATE system.schema_columnfamilies SET column_aliases ='["column1","column2"]' WHERE keyspace_name = 'ks1' AND columnfamily_name = 't1';

Once you exit and restart cqlsh, DESCRIBE is not working as per C* 1.2

cqlsh> describe keyspace ks1;

CREATE KEYSPACE ks1 WITH replication = {'class': 'NetworkTopologyStrategy', 'datacenter1': '1'}  AND durable_writes = true;

CREATE TABLE ks1.t1 (
    key text,
    column1 text,
    column2 text,
    value text,
    PRIMARY KEY (key, column1, column2)
) WITH COMPACT STORAGE
    AND CLUSTERING ORDER BY (column1 ASC, column2 ASC)
    AND caching = '{"keys":"ALL", "rows_per_partition":"NONE"}'
    AND comment = ''
    AND compaction = {'sstable_size_in_mb': '32', 'class': 'org.apache.cassandra.db.compaction.LeveledCompactionStrategy'}
    AND compression = {'chunk_length_kb': '64', 'sstable_compression': 'org.apache.cassandra.io.compress.SnappyCompressor'}
    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 = 0.1
    AND speculative_retry = '99.0PERCENTILE';