[HBASE-23055] Alter hbase:meta

• Type: Task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.0.0-alpha-1, 2.3.0
• Component/s: meta
• Hadoop Flags: Reviewed

Release Note

Adds being able to edit hbase:meta table schema. For example,

hbase(main):006:0> alter 'hbase:meta', {NAME => 'info', DATA_BLOCK_ENCODING => 'ROW_INDEX_V1'}
Updating all regions with the new schema...
All regions updated.
Done.
Took 1.2138 seconds

You can even add columnfamilies. Howevert, you cannot delete any of the core hbase:meta column families such as 'info' and 'table'.

• Assignee: Michael Stack
• Reporter: Michael Stack
• Created: 19/Sep/19 22:28
• Updated: 22/Feb/24 07:01
• Resolved: 23/Jun/20 03:23

Description

hbase:meta is currently hardcoded. Its schema cannot be change.

This issue is about allowing edits to hbase:meta schema. It will allow our being able to set encodings such as the block-with-indexes which will help quell CPU usage on host carrying hbase:meta. A dynamic hbase:meta is first step on road to being able to split meta.

Issue Links

• is related to: HBASE-18095 Provide an option for clients to find the server hosting META that does not involve the ZooKeeper client
• relates to: HBASE-23782 We still reference the hard coded meta descriptor in some places when listing table descriptors
• relates to: HBASE-28376 Column family ns does not exist in region during upgrade to 3.0.0-beta-2
• relates to: HBASE-23676 Address feedback on HBASE-23055 Alter hbase:meta.
• relates to: HBASE-21065 Try ROW_INDEX_V1 encoding on meta table (fix bloomfilters on meta while we are at it)
• relates to: HBASE-25099 Change meta replica count by altering meta table descriptor
• links to: GitHub Pull Request #995
• links to: GitHub Pull Request #1011
• links to: GitHub Pull Request #1043
• links to: GitHub Pull Request #1956

Sub-Tasks

• Survey incidence of table state queries: Resolved
• Address review feedback on hbase:meta: Resolved