question Re: Hbase Region Name in Support Questions

Hbase Region Name

sfdragonstorm — Wed, 30 Oct 2019 18:23:52 GMT

I'm looking at the Hbase Web UI and when I click on one of the region servers listed under base stats I see a list of region names.

Example:

img,0006943d-20150504220458043384375D00000002-00093,1527295748538.7b45a9f6f5584fc50b3152d41a5323a2.

My question is, what part of this is the actual region name. My understanding is, img is the table name, 0006943d-20150504220458043384375D00000002-00093 is the beginning rowkey. Is 1527295748538.7b45a9f6f5584fc50b3152d41a5323a2. the actual region name?

Re: Hbase Region Name

CLDR — Thu, 31 Oct 2019 04:32:50 GMT

Hi ,

We say the entire entry as region name.

The region name is formed by the table name, the start key, the timestamp, and the encoded region name.

table name :- img

start key :- 0006943d-20150504220458043384375D00000002-00093

Timestamp :- 1527295748538

Encoded Region name :- 7b45a9f6f5584fc50b3152d41a5323a2

Please let me know if you have any doubts.

Regards,

Ganesh

Re: Hbase Region Name

pacman — Mon, 21 Nov 2022 07:43:42 GMT

@CLDR what is this encoded region name, how is it formed?

Re: Hbase Region Name

VidyaSargur — Mon, 21 Nov 2022 09:34:25 GMT

@pacman, as this is an older post, you would have a better chance of receiving a resolution by starting a new thread. This will also be an opportunity to provide details specific to your environment that could aid others in assisting you with a more accurate answer to your question. You can link this thread as a reference in your new post.

Re: Hbase Region Name

smdas — Mon, 21 Nov 2022 10:24:32 GMT

Hello @sfdragonstorm & @pacman

In the Region Name "img,0006943d-20150504220458043384375D00000002-00093,1527295748538.7b45a9f6f5584fc50b3152d41a5323a2.", the Table Name is "img", StartKey is "0006943d-20150504220458043384375D00000002-00093", Timestamp is "1527295748538" & "7b45a9f6f5584fc50b3152d41a5323a2" is the Region ID.

Under HBase Data Directory, each Table Directory would have Region-Level Directories as identified by Region ID ("7b45a9f6f5584fc50b3152d41a5323a2" in Example). The Region ID is an MD5 encoded string for the Region Name & generated by HBase itself. Refer [1], if your Team wish to review the same.

Regards, Smarak

[1] https://hbase.apache.org/apidocs/src-html/org/apache/hadoop/hbase/client/RegionInfo.html#line.164