pycassa

The users running Cassandra 0.6.x series should use pycassa 0.3.0, users using the 0.7.x series can use the newer versions.

Features:

• Auto-failover support
• Support for single or thread-local connections
• Connection pooling
• Thrift interface
• Batch interface
• A method to map an existing class to a Cassandra ColumnFamily
• Support for SuperColumns

What is new in this release:

• Added support for Cassandra 1.2+ atomic batches through a new atomic parameter for batch.Mutator, batch.CfMutator, and ColumnFamily.batch().

What is new in version 1.8.0-1:

• Added configurable socket_factory attribute and constructor parameter to ConnectionPool and SystemManager.
• Added SSL support via the new socket_factory attribute.
• Added support for DynamicCompositeType.

What is new in version 1.7.0:

• This release has a few relatively large changes in it: a new connection pool stats collector, compatibility with Cassandra 0.7 through 1.1, and a change in timezone behavior for datetimes.

What is new in version 1.6.0:

• Add request and parameter information to PoolListener callback
• Add ColumnFamily.xget(), a generator version of get() that automatically pages over columns in reasonably sized chunks
• New script for easily building RPM packages
• Add support for Int32Type, a 4-byte signed integer format
• Add constants for the highest and lowest possible TimeUUID values to pycassa.util

What is new in version 1.4.0:

• Features Added:
• Accept column_validation_classes when creating or altering column families with SystemManager
• Ignore UNREACHABLE nodes when waiting for schema version agreement
• Bug Fixes:
• Remove accidental print statement in SystemManager
• Raise TypeError when unexpected types are used for comparator or validator types when creating or altering a Column Family
• Fix packing of column values using column-specific validators during batch inserts when the column name is changed by packing
• Always return timestamps from inserts
• Fix NameError when timestamps are used where a DateType is expected
• Fix NameError in python 2.4 when unpacking DateType objects
• Upgrade ez_setup.py to fix broken setuptools link

What is new in version 1.3.0:

• Bug Fixes:
• Don't ignore columns parameter in ColumnFamilyMap.insert()
• Handle empty instance fields in ColumnFamilyMap.insert()
• Use the same default for timeout in pycassa.connect() as ConnectionPool uses
• Fix typo which caused a different exception to be thrown when an AllServersUnavailable exception was raised
• IPython 0.11 compatibility in pycassaShell
• Correct dependency declaration in setup.py
• Add UUIDType to supported types
• Features:
• The filter_empty parameter was added to get_range() with a default of True; this allows empty rows to be kept if desired

What is new in version 1.2.1-3:

• Bug Fixes:
• Correctly check for Counters in ColumnFamily when setting default_validation_class
• Pass kwargs in ColumnFamilyMap to ColumnFamily
• Avoid potential UnboundLocal in ConnectionPool.execute() when get() fails
• Fix ez_setup dependency/bundling so that package installations using easy_install or pip don't fail without ez_setup installed

What is new in version 1.1.1:

• Features:
• Add max_count and column_reversed params to get_count()
• Add max_count and column_reversed params to multiget_count()
• Bug Fixes:
• Don't retry operations after a TApplicationException. This exception is reserved for programmatic errors (such as a bad API parameters), so retries are not needed.
• If the read_consistency_level kwarg was used in a ColumnFamily constructor, it would be ignored, resulting in a default read consistency level of ONE. This did not affect the read consistency level if it was specified in any other way, including per-method or by setting the read_consistency_level attribute.

What is new in version 1.0.8:

• Pack IndexExpression values in get_indexed_slices() that are supplied through the IndexClause instead of just the instance parameter.
• Column names and values which use Cassandra's IntegerType are unpacked as though they are in a BigInteger-like format. This is (backwards) compatible with the format that pycassa uses to pack IntegerType data. This fixes an incompatibility with the format that cassandra-cli and other clients use to pack IntegerType data.
• Restore Python 2.5 compatibility that was broken through out of order keyword arguments in ConnectionWrapper.
• Pack column_start and column_finish arguments in ColumnFamily *get*() methods when the super_column parameter is used.
• Issue a DeprecationWarning when a method, parameter, or class that has been deprecated is used. Most of these have been deprecated for several releases, but no warnings were issued until now.
• Deprecations are now split into separate sections for each release in the changelog.