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From Alain RODRIGUEZ <arodr...@gmail.com>
Subject Re: Enable compression Cassandra 1.1.2
Date Thu, 15 Nov 2012 14:05:06 GMT
We just upgrade to C* 1.1.6

We can now change anything using the CLI or cqlsh. So problem solved.


2012/11/14 Alain RODRIGUEZ <arodrime@gmail.com>

> Oh! That's obviously the exact same issue. I didn't find this thread while
> searching about my issue.
>
> We will upgrade.
>
> Thanks for the link.
>
>
> 2012/11/14 aaron morton <aaron@thelastpickle.com>
>
>> May be https://issues.apache.org/jira/browse/CASSANDRA-4561
>>
>> Can you upgrade to 1.1.6 ?
>>
>> Cheers
>>
>>    -----------------
>> Aaron Morton
>> Freelance Cassandra Developer
>> New Zealand
>>
>> @aaronmorton
>> http://www.thelastpickle.com
>>
>> On 14/11/2012, at 11:39 PM, Alain RODRIGUEZ <arodrime@gmail.com> wrote:
>>
>> Hi, I am running C* 1.1.2 and there is no way to turn the compression on
>> for a CF.
>>
>> Here is the command I ran in the CLI:
>>
>> UPDATE COLUMN FAMILY data_action WITH
>> compression_options={sstable_compression:SnappyCompressor, chunk_length_kb
>> : 64};
>>
>> Show schema :
>>
>> create column family data_action
>>   with column_type = 'Standard'
>>   and comparator = 'UTF8Type'
>>   and default_validation_class = 'UTF8Type'
>>   and key_validation_class = 'UTF8Type'
>>   and read_repair_chance = 1.0
>>   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 =
>> 'org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy'
>>   and caching = 'KEYS_ONLY';
>>
>> I tried also through cqlsh without success ("ALTER TABLE data_action WITH
>> compression_parameters:sstable_compression = 'SnappyCompressor' AND
>> compression_parameters:chunk_length_kb = 64;")
>>
>> I have no error message just these few lines on system.log:
>>
>> INFO 10:17:12,051 Completed flushing
>> /raid0/cassandra/data/system/schema_columnfamilies/system-schema_columnfamilies-hd-20-Data.db
>> (1367 bytes) for commitlog position
>> ReplayPosition(segmentId=721932060965088, position=116556860)
>>  INFO 10:17:12,052 Compacting
>> [SSTableReader(path='/raid0/cassandra/data/system/schema_columnfamilies/system-schema_columnfamilies-hd-20-Data.db'),
>> SSTableReader(path='/raid0/cassandra/data/system/schema_columnfamilies/system-schema_columnfamilies-hd-19-Data.db'),
>> SSTableReader(path='/raid0/cassandra/data/system/schema_columnfamilies/system-schema_columnfamilies-hd-17-Data.db'),
>> SSTableReader(path='/raid0/cassandra/data/system/schema_columnfamilies/system-schema_columnfamilies-hd-18-Data.db')]
>>  INFO 10:17:12,134 Compacted to
>> [/raid0/cassandra/data/system/schema_columnfamilies/system-schema_columnfamilies-hd-21-Data.db,].
>>  50,928 to 46,827 (~91% of original) bytes for 3 keys at 0.544606MB/s.
>>  Time: 82ms.
>>
>> I also tried upgrading sstables but compression is definitely not enabled
>> (same size of data + JMX show a CompressionRatio of 0.0).
>>
>> Does anyone already saw something similar ?
>>
>> Alain
>>
>>
>>
>

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