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https://issues.apache.org/jira/browse/CASSANDRA-11055?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15279473#comment-15279473
]
Stefania commented on CASSANDRA-11055:
--------------------------------------
This is the exception stack trace:
{code}
raceback (most recent call last):
File "/home/stefi/git/cstar/cassandra/bin/cqlsh", line 1010, in onecmd
self.handle_statement(st, statementtext)
File "/home/stefi/git/cstar/cassandra/bin/cqlsh", line 1047, in
handle_statement
return custom_handler(parsed)
File "/home/stefi/git/cstar/cassandra/bin/cqlsh", line 1475, in do_describe
self.describe_keyspace(ksname)
File "/home/stefi/git/cstar/cassandra/bin/cqlsh", line 1317, in
describe_keyspace
self.print_recreate_keyspace(self.get_keyspace_meta(ksname), sys.stdout)
File "/home/stefi/git/cstar/cassandra/bin/cqlsh", line 1277, in
print_recreate_keyspace
out.write(ksdef.export_as_string())
File
"/home/stefi/git/cstar/cassandra/bin/../lib/cassandra-driver-internal-only-2.7.2.zip/cassandra-driver-2.7.2/cassandra/metadata.py",
line 875, in export_as_string
+ [t.export_as_string() for t in self.tables.values()])
File
"/home/stefi/git/cstar/cassandra/bin/../lib/cassandra-driver-internal-only-2.7.2.zip/cassandra-driver-2.7.2/cassandra/metadata.py",
line 1302, in export_as_string
ret += "\nApproximate structure, for reference:\n(this should not be used
to reproduce this schema)\n\n%s\n*/" % self.all_as_cql()
File
"/home/stefi/git/cstar/cassandra/bin/../lib/cassandra-driver-internal-only-2.7.2.zip/cassandra-driver-2.7.2/cassandra/metadata.py",
line 1309, in all_as_cql
ret = self.as_cql_query(formatted=True)
File
"/home/stefi/git/cstar/cassandra/bin/../lib/cassandra-driver-internal-only-2.7.2.zip/cassandra-driver-2.7.2/cassandra/metadata.py",
line 1340, in as_cql_query
columns.append("%s %s%s" % (protect_name(col.name), col.typestring, '
static' if col.is_static else ''))
File
"/home/stefi/git/cstar/cassandra/bin/../lib/cassandra-driver-internal-only-2.7.2.zip/cassandra-driver-2.7.2/cassandra/metadata.py",
line 1430, in protect_name
return maybe_escape_name(name)
File
"/home/stefi/git/cstar/cassandra/bin/../lib/cassandra-driver-internal-only-2.7.2.zip/cassandra-driver-2.7.2/cassandra/metadata.py",
line 1459, in maybe_escape_name
return escape_name(name)
File
"/home/stefi/git/cstar/cassandra/bin/../lib/cassandra-driver-internal-only-2.7.2.zip/cassandra-driver-2.7.2/cassandra/metadata.py",
line 1463, in escape_name
return '"%s"' % (name.replace('"', '""'),)
AttributeError: 'NoneType' object has no attribute 'replace'
{code}
It is caused by {{ColumnMetadata}} instances where the name is set to {{None}}.
I've attached [^data.tar.gz], it contains a data directory with a CF that was
generated in 1.2.9 following the instructions in the description and it can be
used to reproduce the problem in 2.1 HEAD.
[~aholmber]: the problem is in {{_build_table_metadata()}}, see patch attached
([^11055-driver-2.7.2.patch]). In the absence of column aliases, we pick up an
array set to {{\[None, None\]}} from {{comparator.fieldnames}}. I've fixed it
so that it gets the column names from the clustering rows but you may want to
check the contents of {{comparator.fieldnames}} before using it. Also, when
processing the normal columns, {{cf_col_rows}}, shouldn't we skip clustering
and partition columns?
*The exception does not happen in 2.2 HEAD*, so I am not sure how much of this
patch is required in the latest driver version.
Due to the API changes in the 3.0+ driver, I would prefer to apply this patch
to the 2.7.2 branch rather than upgrade the bundled driver in 2.1 to 3.0, is
this OK [~aholmber]?
> C*2.1 cqlsh DESCRIBE KEYSPACE ( or TABLE ) returns 'NoneType' object has no
> attribute 'replace'
> -----------------------------------------------------------------------------------------------
>
> Key: CASSANDRA-11055
> URL: https://issues.apache.org/jira/browse/CASSANDRA-11055
> Project: Cassandra
> Issue Type: Bug
> Reporter: Simon Ashley
> Assignee: Stefania
> Labels: cqlsh
> Fix For: 2.1.x
>
> Attachments: 11055-driver-2.7.2.patch, data.tar.gz
>
>
> 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';
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