Hello users, faced very strange behaviour when chnaging compression_parameters of exisiting CF. After changing the compaction strategy, compression_strategy returning back to the "SnappyCompressor". Using version 1.1.5. [cqlsh 2.2.0 | Cassandra 1.1.5 | CQL spec 2.0.0 | Thrift protocol 19.32.0] I have one column family with following paramters:
cqlsh > describe columnfamily auditlog_01; CREATE TABLE auditlog_01 ( lid text PRIMARY KEY, dscn text, asid text, soapa text, sysn text, msgs double, leid bigint, prc text, aeid bigint, adt timestamp, name text, asn text, msg text, msgid text, msgt text ) WITH comment='' AND comparator=text AND read_repair_chance=0.100000 AND gc_grace_seconds=864000 AND default_validation=text AND min_compaction_threshold=4 AND max_compaction_threshold=32 AND replicate_on_write='true' AND compaction_strategy_class='SizeTieredCompactionStrategy' AND compaction_strategy_options:sstable_size_in_mb='5' AND compression_parameters:sstable_compression='SnappyCompressor'; Changing compression strategy to 'DeflateCompressor cqlsh:p00smev_archKS> ALTER TABLE auditlog_01 WITH compression_parameters:sstabl e_compression = 'DeflateCompressor' AND compression_parameters:chunk_length_kb = 64; cqlsh:p00smev_archKS> describe columnfamily auditlog_01; CREATE TABLE auditlog_01 ( lid text PRIMARY KEY, dscn text, asid text, soapa text, sysn text, msgs double, leid bigint, prc text, aeid bigint, adt timestamp, name text, asn text, msg text, msgid text, msgt text ) WITH comment='' AND comparator=text AND read_repair_chance=0.100000 AND gc_grace_seconds=864000 AND default_validation=text AND min_compaction_threshold=4 AND max_compaction_threshold=32 AND replicate_on_write='true' AND compaction_strategy_class='SizeTieredCompactionStrategy' AND compaction_strategy_options:sstable_size_in_mb='5' AND compression_parameters:chunk_length_kb='64' AND compression_parameters:sstable_compression='DeflateCompressor'; it's sucessfuly changed the compression strategy to 'DeflateCompressor, after that when i am trying to change the compaction strategy, compression strategy returing back to "SnappyCompressor". cqlsh:p00smev_archKS> alter table auditlog_01 with compaction_strategy_class='Le veledCompactionStrategy' AND compaction_strategy_options:sstable_size_in_mb=5; cqlsh:p00smev_archKS> describe columnfamily auditlog_01; CREATE TABLE auditlog_01 ( lid text PRIMARY KEY, dscn text, asid text, soapa text, sysn text, msgs double, leid bigint, prc text, aeid bigint, adt timestamp, name text, asn text, msg text, msgid text, msgt text ) WITH comment='' AND comparator=text AND read_repair_chance=0.100000 AND gc_grace_seconds=864000 AND default_validation=text AND min_compaction_threshold=4 AND max_compaction_threshold=32 AND replicate_on_write='true' AND compaction_strategy_class='SizeTieredCompactionStrategy' AND compaction_strategy_options:sstable_size_in_mb='5' AND compression_parameters:sstable_compression='SnappyCompressor'; is it expectable behaviour? or it's bug?
