Deleting cells of a row in HBase

Question

I am new to HBase and I am creating a large table. My table periodically is being scanned and some data related to some row are being deleted.

I wanted to know if for a specific row , I delete some columns of that row, it decrease the amount of disk consumption so it reduces the amount of disk being used?

Was it useful? Feel free to ask questions... – Ram Ghadiyaram Dec 15 '16 at 05:20 — Ram Ghadiyaram, Dec 15 '16 at 05:20

score 0 · Answer 1 · edited May 23 '17 at 12:13

0

Hbase data will be stored in HDFS usally under /hbase

Obviously, it will reduce some space if you delete data.

please check like below

Precheck :

hadoop fs -ls -R yourpath to hbase usally /hbase

hadoop fs -du -h yourpath to hbase usally /hbase

Delete : now you run your program to delete...

PostCheck :

 hadoop fs -du -h yourpath to hbase usally /hbase

Note : you can remove -h option if you want to observe minute size change in bytes.

-h is human readable size i.e in mbs , GB with this minute difference cant be observed.

Please see my answer if you want to do it programatically

edited May 23 '17 at 12:13

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answered Dec 06 '16 at 06:31

Ram Ghadiyaram

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if you are okay! pls care to vote-up/accept answer as owner. Thanks – Ram Ghadiyaram Dec 12 '16 at 07:44

Deleting cells of a row in HBase

1 Answers1

Precheck :

Delete : now you run your program to delete...

PostCheck :

Please see my answer if you want to do it programatically