Nihal Jain created HBASE-28034:
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Summary: Rewrite hbck2 documentation using ChatGPT
Key: HBASE-28034
URL: https://issues.apache.org/jira/browse/HBASE-28034
Project: HBase
Issue Type: Improvement
Reporter: Nihal Jain
Assignee: Nihal Jain
Just a thought, could we re-write the operator tools
[README.md|https://github.com/apache/hbase-operator-tools/blob/master/README.md]
using ChatGPT and make it better?
A sample paragraph re-written by ChatGPT is as follows:
Original:
{quote}
h3. Some General Principals
When making repair, make sure hbase:meta is consistent first before you go
about fixing any other issue type such as a filesystem deviance. Deviance in
the filesystem or problems with assign should be addressed after the hbase:meta
has been put in order. If hbase:meta is out of whack, the Master cannot make
proper placements when adopting orphan filesystem data or making region
assignments.
Other general principles to keep in mind include a Region can not be assigned
if it is in _CLOSING_ state (or the inverse, unassigned if in _OPENING_ state)
without first transitioning via {_}CLOSED{_}: Regions must always move from
{_}CLOSED{_}, to {_}OPENING{_}, to {_}OPEN{_}, and then to {_}CLOSING{_},
{_}CLOSED{_}.
When making repair, do fixup of a table-at-a-time.
Also, if a table is {_}DISABLED{_}, you cannot assign a Region. In the Master
logs, you will see that the Master will report that the assign has been skipped
because the table is {_}DISABLED{_}. You may want to assign a Region because it
is currently in the _OPENING_ state and you want it in the _CLOSED_ state so it
agrees with the table's _DISABLED_ state. In this situation, you may have to
temporarily set the table status to {_}ENABLED{_}, just so you can do the
assign, and then set it back again after the unassign. _HBCK2_ has facility to
allow you do this. See the _HBCK2_ usage output.
What follows is a mix of notes and prescription that comes of experience
running hbase-2.x so far. The root issues that brought on states described
below has been fixed in later versions of hbase so upgrade if you can so as to
avoid scenarios described.
{quote}
Rephrased:
{quote}*Some Basic Principles*
Ensure hbase:meta's consistency before attempting to fix any other type of
problem, such as filesystem deviations. Issues related to filesystem or
assignment should be addressed once hbase:meta is sorted out. If hbase:meta is
awry, the Master cannot accurately allocate orphan filesystem data or region
assignments.
Remember that a Region cannot be assigned if it is in a CLOSING state (or
conversely, unassigned if in an OPENING state) without going through a CLOSED
state first. Regions must always progress from CLOSED, to OPENING, to OPEN, to
CLOSING, and then back to CLOSED.
Make repairs table-by-table.
Additionally, if a table is DISABLED, you cannot assign a Region. The Master
logs will indicate that the assignment has been bypassed due to the table's
DISABLED status. You might want to assign a Region because it is currently in
the OPENING state, but you want it in the CLOSED state to match the DISABLED
state of the table. In such cases, you might need to briefly change the table
status to ENABLED to make the assignment, then switch it back after the
unassignment. HBCK2 provides a facility for this. Please refer to the HBCK2
usage output.
The following notes and instructions come from the experience of running
hbase-2.x so far. The underlying issues causing the states described below have
been resolved in later versions of hbase, so upgrading is recommended to avoid
these scenarios.
{quote}
Is this worth the effort? Or do others feel current doc is good and does not
need any refinement?
It may require some effort, as we may only start with first commit with
untouched document generated by ChatGPT, but then the draft would need to be
worked upon, based on some proofreading by the contributor and reviewers.
Curious to know how others feel.
Also, Apache has some guidelines around using of generative ai tools at
[https://www.apache.org/legal/generative-tooling.html]
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