Hi,

 

Iīm running Cassandra 1.1.5 and have following issue.

 

Iīm using a 10 days TTL on my CF. I can see a lot of tombstones in there, but they arenīt deleted after compaction.

 

I have tried a nodetool –cleanup and also a restart of Cassandra, but nothing happened.

 

total 61G

drwxr-xr-x  2 cassandra dba  20K Mar  4 06:35 .

drwxr-xr-x 10 cassandra dba 4.0K Dec 10 13:05 ..

-rw-r--r--  1 cassandra dba  15M Dec 15 22:04 whatever-he-1398-CompressionInfo.db

-rw-r--r--  1 cassandra dba  19G Dec 15 22:04 whatever-he-1398-Data.db

-rw-r--r--  1 cassandra dba  15M Dec 15 22:04 whatever-he-1398-Filter.db

-rw-r--r--  1 cassandra dba 357M Dec 15 22:04 whatever-he-1398-Index.db

-rw-r--r--  1 cassandra dba 4.3K Dec 15 22:04 whatever-he-1398-Statistics.db

-rw-r--r--  1 cassandra dba 9.5M Feb  6 15:45 whatever-he-5464-CompressionInfo.db

-rw-r--r--  1 cassandra dba  12G Feb  6 15:45 whatever-he-5464-Data.db

-rw-r--r--  1 cassandra dba  48M Feb  6 15:45 whatever-he-5464-Filter.db

-rw-r--r--  1 cassandra dba 736M Feb  6 15:45 whatever-he-5464-Index.db

-rw-r--r--  1 cassandra dba 4.3K Feb  6 15:45 whatever-he-5464-Statistics.db

-rw-r--r--  1 cassandra dba 9.7M Feb 21 19:13 whatever-he-6829-CompressionInfo.db

-rw-r--r--  1 cassandra dba  12G Feb 21 19:13 whatever-he-6829-Data.db

-rw-r--r--  1 cassandra dba  47M Feb 21 19:13 whatever-he-6829-Filter.db

-rw-r--r--  1 cassandra dba 792M Feb 21 19:13 whatever-he-6829-Index.db

-rw-r--r--  1 cassandra dba 4.3K Feb 21 19:13 whatever-he-6829-Statistics.db

-rw-r--r--  1 cassandra dba 3.7M Mar  1 10:46 whatever-he-7578-CompressionInfo.db

-rw-r--r--  1 cassandra dba 4.3G Mar  1 10:46 whatever-he-7578-Data.db

-rw-r--r--  1 cassandra dba  12M Mar  1 10:46 whatever-he-7578-Filter.db

-rw-r--r--  1 cassandra dba 274M Mar  1 10:46 whatever-he-7578-Index.db

-rw-r--r--  1 cassandra dba 4.3K Mar  1 10:46 whatever-he-7578-Statistics.db

-rw-r--r--  1 cassandra dba 3.6M Mar  1 11:21 whatever-he-7582-CompressionInfo.db

-rw-r--r--  1 cassandra dba 4.3G Mar  1 11:21 whatever-he-7582-Data.db

-rw-r--r--  1 cassandra dba 9.7M Mar  1 11:21 whatever-he-7582-Filter.db

-rw-r--r--  1 cassandra dba 236M Mar  1 11:21 whatever-he-7582-Index.db

-rw-r--r--  1 cassandra dba 4.3K Mar  1 11:21 whatever-he-7582-Statistics.db

-rw-r--r--  1 cassandra dba 3.7M Mar  3 12:13 whatever-he-7869-CompressionInfo.db

-rw-r--r--  1 cassandra dba 4.3G Mar  3 12:13 whatever-he-7869-Data.db

-rw-r--r--  1 cassandra dba 9.8M Mar  3 12:13 whatever-he-7869-Filter.db

-rw-r--r--  1 cassandra dba 239M Mar  3 12:13 whatever-he-7869-Index.db

-rw-r--r--  1 cassandra dba 4.3K Mar  3 12:13 whatever-he-7869-Statistics.db

-rw-r--r--  1 cassandra dba 924K Mar  3 18:02 whatever-he-7953-CompressionInfo.db

-rw-r--r--  1 cassandra dba 1.1G Mar  3 18:02 whatever-he-7953-Data.db

-rw-r--r--  1 cassandra dba 2.1M Mar  3 18:02 whatever-he-7953-Filter.db

-rw-r--r--  1 cassandra dba  51M Mar  3 18:02 whatever-he-7953-Index.db

-rw-r--r--  1 cassandra dba 4.3K Mar  3 18:02 whatever-he-7953-Statistics.db

-rw-r--r--  1 cassandra dba 231K Mar  3 20:06 whatever-he-7974-CompressionInfo.db

-rw-r--r--  1 cassandra dba 268M Mar  3 20:06 whatever-he-7974-Data.db

-rw-r--r--  1 cassandra dba 483K Mar  3 20:06 whatever-he-7974-Filter.db

-rw-r--r--  1 cassandra dba  12M Mar  3 20:06 whatever-he-7974-Index.db

-rw-r--r--  1 cassandra dba 4.3K Mar  3 20:06 whatever-he-7974-Statistics.db

-rw-r--r--  1 cassandra dba 116K Mar  4 06:28 whatever-he-8002-CompressionInfo.db

-rw-r--r--  1 cassandra dba 146M Mar  4 06:28 whatever-he-8002-Data.db

-rw-r--r--  1 cassandra dba 646K Mar  4 06:28 whatever-he-8002-Filter.db

-rw-r--r--  1 cassandra dba  16M Mar  4 06:28 whatever-he-8002-Index.db

-rw-r--r--  1 cassandra dba 4.3K Mar  4 06:28 whatever-he-8002-Statistics.db

-rw-r--r--  1 cassandra dba  58K Mar  4 06:28 whatever-he-8003-CompressionInfo.db

-rw-r--r--  1 cassandra dba  67M Mar  4 06:28 whatever-he-8003-Data.db

-rw-r--r--  1 cassandra dba 105K Mar  4 06:28 whatever-he-8003-Filter.db

-rw-r--r--  1 cassandra dba 2.5M Mar  4 06:28 whatever-he-8003-Index.db

-rw-r--r--  1 cassandra dba 4.3K Mar  4 06:28 whatever-he-8003-Statistics.db

-rw-r--r--  1 cassandra dba 230K Mar  4 06:30 whatever-he-8004-CompressionInfo.db

-rw-r--r--  1 cassandra dba 261M Mar  4 06:30 whatever-he-8004-Data.db

-rw-r--r--  1 cassandra dba 480K Mar  4 06:30 whatever-he-8004-Filter.db

-rw-r--r--  1 cassandra dba  12M Mar  4 06:30 whatever-he-8004-Index.db

-rw-r--r--  1 cassandra dba 4.3K Mar  4 06:30 whatever-he-8004-Statistics.db

-rw-r--r--  1 cassandra dba  15K Mar  4 06:30 whatever-he-8005-CompressionInfo.db

-rw-r--r--  1 cassandra dba  16M Mar  4 06:30 whatever-he-8005-Data.db

-rw-r--r--  1 cassandra dba  39K Mar  4 06:30 whatever-he-8005-Filter.db

-rw-r--r--  1 cassandra dba 944K Mar  4 06:30 whatever-he-8005-Index.db

-rw-r--r--  1 cassandra dba 4.3K Mar  4 06:30 whatever-he-8005-Statistics.db

-rw-r--r--  1 cassandra dba 5.0K Mar  4 06:35 whatever-he-8006-CompressionInfo.db

-rw-r--r--  1 cassandra dba 6.7M Mar  4 06:35 whatever-he-8006-Data.db

-rw-r--r--  1 cassandra dba  81K Mar  4 06:35 whatever-he-8006-Filter.db

-rw-r--r--  1 cassandra dba 2.0M Mar  4 06:35 whatever-he-8006-Index.db

-rw-r--r--  1 cassandra dba 4.3K Mar  4 06:35 whatever-he-8006-Statistics.db

 

The things marked in red, I guess, are the old data, but they arenīt deleted. As you can see on the date, they are older than 10 days.

 

Is there any possibility to delete them?

 

 

Here is also the schema of the CF:

create column family whatever

  with column_type = 'Standard'

  and comparator = 'AsciiType'

  and default_validation_class = 'AsciiType'

  and key_validation_class = 'AsciiType'

  and read_repair_chance = 0.0

  and dclocal_read_repair_chance = 0.0

  and gc_grace = 0

  and min_compaction_threshold = 4

  and max_compaction_threshold = 32

  and replicate_on_write = false

  and compaction_strategy = 'org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy'

  and caching = 'KEYS_ONLY'

  and compression_options = {'sstable_compression' : 'org.apache.cassandra.io.compress.SnappyCompressor'};

 

 

Br,

Matthias Zeilinger

Production Operation – Shared Services

 

P: +43 (0) 50 858-31185

M: +43 (0) 664 85-34459

E: matthias.zeilinger@bwinparty.com

 

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