cassandra-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Vladimir Yudovin <vla...@winguzone.com>
Subject Re: Data in multi disks is not evenly distributed
Date Sun, 11 Jun 2017 09:26:24 GMT
Hi,



Do your disks have the same size? AFAK Cassandra distributes data with proportion to disk
size, i.e. keeps the same percent of busy space.



Best regards, Vladimir Yudovin, 

Winguzone - Cloud Cassandra Hosting






---- On Wed, 07 Jun 2017 06:15:48 -0400 Xihui He &lt;xihuihe@gmail.com&gt; wrote ----




Dear All,



We are using multiple disks per node and find the data is not evenly distributed (data01 uses
1.1T, but data02 uses 353G). Is this expected? If data01 becomes full, would the node be still
writable? We are using 2.2.6.



Thanks,

Xihui



data_file_directories:

    - /data00/cassandra

    - /data01/cassandra

    - /data02/cassandra

    - /data03/cassandra

    - /data04/cassandra




df

/dev/sde1       1.8T  544G  1.2T  32% /data03

/dev/sdc1       1.8T  1.1T  683G  61% /data01

/dev/sdf1       1.8T  491G  1.3T  29% /data04

/dev/sdd1       1.8T  353G  1.4T  21% /data02

/dev/sdb1       1.8T  285G  1.5T  17% /data00





root@n9-016-015:~# du -sh /data01/cassandra/album_media_feature/*

143M /data01/cassandra/album_media_feature/media_feature_blur-066e5700c41511e5beacf197ae340934

4.4G /data01/cassandra/album_media_feature/media_feature_c1-dbadf930c41411e5974743d3a691d887

56K /data01/cassandra/album_media_feature/media_feature_duplicate-09d4b380c41511e58501e9aa37be91a5

16K /data01/cassandra/album_media_feature/media_feature_emotion-b8570470054d11e69fb88f073bab8267

240M /data01/cassandra/album_media_feature/media_feature_exposure-f55449c0c41411e58f5c9b66773b60c3

649M /data01/cassandra/album_media_feature/media_feature_group-f8de0cc0c41411e5827b995f709095c8

22G /data01/cassandra/album_media_feature/media_feature_multi_class-cf3bb72006c511e69fb88f073bab8267

44K /data01/cassandra/album_media_feature/media_feature_pool5-1185b200c41511e5b7d8757e25e34d67

15G /data01/cassandra/album_media_feature/media_feature_poster-fcf45850c41411e597bb1507d1856305

8.0K /data01/cassandra/album_media_feature/media_feature_quality-155d9500c41511e5974743d3a691d887

17G /data01/cassandra/album_media_feature/media_feature_quality_rc-51babf50dba811e59fb88f073bab8267

8.7G /data01/cassandra/album_media_feature/media_feature_scene-008a5050c41511e59ebcc3582d286c8d

8.0K /data01/cassandra/album_media_feature/media_region_features_v4-29a0cd10150611e6bd3e3f41faa2612a

971G /data01/cassandra/album_media_feature/media_region_features_v5-1b805470a3d711e68121757e9ac51b7b



root@n9-016-015:~# du -sh /data02/cassandra/album_media_feature/*

1.6G /data02/cassandra/album_media_feature/media_feature_blur-066e5700c41511e5beacf197ae340934

44G /data02/cassandra/album_media_feature/media_feature_c1-dbadf930c41411e5974743d3a691d887

64K /data02/cassandra/album_media_feature/media_feature_duplicate-09d4b380c41511e58501e9aa37be91a5

75G /data02/cassandra/album_media_feature/media_feature_emotion-b8570470054d11e69fb88f073bab8267

2.0G /data02/cassandra/album_media_feature/media_feature_exposure-f55449c0c41411e58f5c9b66773b60c3

21G /data02/cassandra/album_media_feature/media_feature_group-f8de0cc0c41411e5827b995f709095c8

336M /data02/cassandra/album_media_feature/media_feature_multi_class-cf3bb72006c511e69fb88f073bab8267

44K /data02/cassandra/album_media_feature/media_feature_pool5-1185b200c41511e5b7d8757e25e34d67

2.0G /data02/cassandra/album_media_feature/media_feature_poster-fcf45850c41411e597bb1507d1856305

8.0K /data02/cassandra/album_media_feature/media_feature_quality-155d9500c41511e5974743d3a691d887

17G /data02/cassandra/album_media_feature/media_feature_quality_rc-51babf50dba811e59fb88f073bab8267

141M /data02/cassandra/album_media_feature/media_feature_scene-008a5050c41511e59ebcc3582d286c8d

8.0K /data02/cassandra/album_media_feature/media_region_features_v4-29a0cd10150611e6bd3e3f41faa2612a

93G /data02/cassandra/album_media_feature/media_region_features_v5-1b805470a3d711e68121757e9ac51b7b



root@n9-016-015:~# du -sh /data03/cassandra/album_media_feature/*

4.3G /data03/cassandra/album_media_feature/media_feature_blur-066e5700c41511e5beacf197ae340934

19G /data03/cassandra/album_media_feature/media_feature_c1-dbadf930c41411e5974743d3a691d887

72K /data03/cassandra/album_media_feature/media_feature_duplicate-09d4b380c41511e58501e9aa37be91a5

2.8G /data03/cassandra/album_media_feature/media_feature_emotion-b8570470054d11e69fb88f073bab8267

105M /data03/cassandra/album_media_feature/media_feature_exposure-f55449c0c41411e58f5c9b66773b60c3

15G /data03/cassandra/album_media_feature/media_feature_group-f8de0cc0c41411e5827b995f709095c8

23G /data03/cassandra/album_media_feature/media_feature_multi_class-cf3bb72006c511e69fb88f073bab8267

44K /data03/cassandra/album_media_feature/media_feature_pool5-1185b200c41511e5b7d8757e25e34d67

17G /data03/cassandra/album_media_feature/media_feature_poster-fcf45850c41411e597bb1507d1856305

8.0K /data03/cassandra/album_media_feature/media_feature_quality-155d9500c41511e5974743d3a691d887

294M /data03/cassandra/album_media_feature/media_feature_quality_rc-51babf50dba811e59fb88f073bab8267

5.1G /data03/cassandra/album_media_feature/media_feature_scene-008a5050c41511e59ebcc3582d286c8d

8.0K /data03/cassandra/album_media_feature/media_region_features_v4-29a0cd10150611e6bd3e3f41faa2612a

228G /data03/cassandra/album_media_feature/media_region_features_v5-1b805470a3d711e68121757e9ac51b7b








Mime
View raw message