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From "Wasil Shaikh (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-14622) Run compaction on cluster
Date Mon, 06 Aug 2018 08:25:00 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-14622?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16569863#comment-16569863
] 

Wasil Shaikh commented on CASSANDRA-14622:
------------------------------------------

You mean, i should draft the concerns & mail it.

> Run compaction on cluster 
> --------------------------
>
>                 Key: CASSANDRA-14622
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-14622
>             Project: Cassandra
>          Issue Type: Bug
>          Components: CQL
>         Environment: CentOS Linux release 7.1.1503 (Core)
>            Reporter: Wasil Shaikh
>            Priority: Major
>              Labels: Cassandra
>
> Dear Team,
> I have setup a cassandra cluster for 3 m/c.
> [root@ip-172-31-21-222 ~]# nodetool status
> Datacenter: datacenter1
> =======================
> Status=Up/Down
> |/ State=Normal/Leaving/Joining/Moving
> -- Address Load Tokens Owns Host ID Rack
> UN 172.31.21.223 4.01 TB 256 ? 9d2a408a-264f-423f-8af2-e1d4cb608998 rack1
> UN 172.31.21.222 4.5 TB 256 ? c3d24437-3e03-41d7-a2af-2ed53bcf2dfc rack1
> UN 172.31.21.221 4.26 TB 256 ? aaf4fbaf-837b-44e2-98ba-5eb2b3e6b62b rack1
> Note: Non-system keyspaces don't have the same replication settings, effective ownership
information is meaningless
> [root@ip-172-31-21-222 ~]#
>  
> Now i have deleted around 40-45 GB data but space seems is not vacant.
> I'm using SizeTieredCompactionStrategy and below is my table defination.
>  
> CREATE TABLE test.att_103 (
>  md5 text PRIMARY KEY,
>  arcsize int,
>  att_str blob,
>  attsize int,
>  udate timestamp
> ) WITH bloom_filter_fp_chance = 0.01
>  AND caching = '\{"keys":"ALL", "rows_per_partition":"NONE"}'
>  AND comment = ''
>  AND compaction = \{'class': 'org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy'}
>  AND compression = \{'sstable_compression': 'org.apache.cassandra.io.compress.LZ4Compressor'}
>  AND dclocal_read_repair_chance = 0.1
>  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 = 0.0
>  AND speculative_retry = '99.0PERCENTILE';
> I have dumped data using sstable2json command to verify whether my column data is deleted
or not.
> e.g
> {"key": "9b7937de43aa22fc3bf18ec72d86140b",
>  "cells": [["att_str",1533305633,1533305633552000,"d"],
>            ["udate","2018-08-03 14:13Z",1533305633552000]]}
>  
> Now can you help me here regarding how to run compaction manually instead of waiting
for 10 days of grace period.
>  
> Thanks
> Wasil.
>  



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