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https://issues.apache.org/jira/browse/HBASE-4605?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13159508#comment-13159508
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[email protected] commented on HBASE-4605:
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bq. On 2011-11-29 08:36:29, Gary Helmling wrote:
bq. > Most of what I see is just style issues, and a number of the
HTableDescriptor changes seem unnecessary. If we clean up those, and assuming
the latest patch has some documentation, I think this is looking pretty good.
Uploading the latest (with some of your recommended changes) after this. Couple
of concerns may still need to be worked out around IntegerConstraint and the
mods to HTD. Let me know what you think.
bq. On 2011-11-29 08:36:29, Gary Helmling wrote:
bq. > src/main/java/org/apache/hadoop/hbase/constraint/package-info.java, line
22
bq. > <https://reviews.apache.org/r/2579/diff/6/?file=59947#file59947line22>
bq. >
bq. > This differs from what seems to be the latest patch in JIRA
(java_HBASE-4605_v3.txt). Are there other differences than the javadoc?
bq. >
bq. > For a patch of this size, review still belongs here in review board
(even with HadoopQA patch testing), so we should keep both versions in sync.
Please update the diff here with the latest patch.
Yeah, this is the old version. Whats up on the ticket is just documentation.
I'll put up the latest here after making the changes.
bq. On 2011-11-29 08:36:29, Gary Helmling wrote:
bq. > src/main/java/org/apache/hadoop/hbase/constraint/Constraints.java, line
250
bq. > <https://reviews.apache.org/r/2579/diff/6/?file=59945#file59945line250>
bq. >
bq. > if / else bodies should be contained in braces.
done.
bq. On 2011-11-29 08:36:29, Gary Helmling wrote:
bq. > src/main/java/org/apache/hadoop/hbase/constraint/Constraints.java, line
233
bq. > <https://reviews.apache.org/r/2579/diff/6/?file=59945#file59945line233>
bq. >
bq. > Be consistent with braces here
Just following the requirements of java :) Done.
bq. On 2011-11-29 08:36:29, Gary Helmling wrote:
bq. > src/main/java/org/apache/hadoop/hbase/constraint/Constraints.java, line
22
bq. > <https://reviews.apache.org/r/2579/diff/6/?file=59945#file59945line22>
bq. >
bq. > I see the usage outside of HTD now, but still don't see where this
provides more utility than Bytes.toString()
By pulling the functionality out of the HTD we can be sure that outside classes
don't have to worry about making sure they use the 'right' (de)serialization of
they keys. Right now we don't want to to anything more than just
Bytes.toString(), but in the future we could make it something more complex.
For example, take the case where user specified keys are prepended with a
special identifier, so we can tell the difference between the two.
Alternatively, we could do some cool stuff to cut down on object creation
(potentially) with the key conversion or make it faster or more compact or w/e.
Basically, I'm just adding the encapsulation so classes outside of the HTD
don't have to know about the fact that the HTD is using Bytes.toString() (and
encapsulation is good, right?). This way it is obvious, to an outside class,
what is going - oh, it just serializing the key. This makes the addCP code much
cleaner too.
bq. On 2011-11-29 08:36:29, Gary Helmling wrote:
bq. >
src/main/java/org/apache/hadoop/hbase/constraint/ConstraintProcessor.java, line
86
bq. > <https://reviews.apache.org/r/2579/diff/6/?file=59944#file59944line86>
bq. >
bq. > style nit: for loop body should be enclosed in braces
Done
bq. On 2011-11-29 08:36:29, Gary Helmling wrote:
bq. >
src/main/java/org/apache/hadoop/hbase/constraint/ConstraintProcessor.java, line
76
bq. > <https://reviews.apache.org/r/2579/diff/6/?file=59944#file59944line76>
bq. >
bq. > Add constraints.size() to this message and you don't need the
separate LOG.debug() message.
Done
bq. On 2011-11-29 08:36:29, Gary Helmling wrote:
bq. >
src/main/java/org/apache/hadoop/hbase/constraint/ConstraintProcessor.java, line
61
bq. > <https://reviews.apache.org/r/2579/diff/6/?file=59944#file59944line61>
bq. >
bq. > style nit: if body should be contained in braces
Done.
bq. On 2011-11-29 08:36:29, Gary Helmling wrote:
bq. > src/main/java/org/apache/hadoop/hbase/constraint/IntegerConstraint.java,
line 32
bq. > <https://reviews.apache.org/r/2579/diff/6/?file=59946#file59946line32>
bq. >
bq. > This still seems odd to me. I can't see storing an integer value
encoded as a string, in order to be able to check for it being a valid integer.
bq. >
bq. > I would think most users would be storing integer values using
Bytes.toInt(), for which the checks here would not work.
The only problem with using the Bytes deserialization checking is that even if
you put a string in as bytes, it can be read out as an integer (in certain
cases). Therefore, you could get a case where something that should not be an
integer is allowed when it really ought not to be.
bq. On 2011-11-29 08:36:29, Gary Helmling wrote:
bq. > src/test/java/org/apache/hadoop/hbase/constraint/TestConstraints.java,
line 90
bq. > <https://reviews.apache.org/r/2579/diff/6/?file=59954#file59954line90>
bq. >
bq. > brace alignment and indentation
Done.
bq. On 2011-11-29 08:36:29, Gary Helmling wrote:
bq. > src/main/java/org/apache/hadoop/hbase/HTableDescriptor.java, line 1166
bq. > <https://reviews.apache.org/r/2579/diff/6/?file=59940#file59940line1166>
bq. >
bq. > I don't see why these changes are necessary when I don't see them
being used anywhere outside of HTD? Do these additions buy us anything? In my
opinion, they're not making the code any clearer than the current
Byte.toString(), etc.
See response below.
- Jesse
-----------------------------------------------------------
This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/2579/#review3551
-----------------------------------------------------------
On 2011-11-23 21:19:56, Jesse Yates wrote:
bq.
bq. -----------------------------------------------------------
bq. This is an automatically generated e-mail. To reply, visit:
bq. https://reviews.apache.org/r/2579/
bq. -----------------------------------------------------------
bq.
bq. (Updated 2011-11-23 21:19:56)
bq.
bq.
bq. Review request for hbase.
bq.
bq.
bq. Summary
bq. -------
bq.
bq. Most of the implementation for adding constraints as a coprocessor.
bq.
bq. Looking for general comments on style/structure, though nitpicks are ok
too.
bq.
bq. Currently missing implementation for disableConstraints() since that will
require adding removeCoprocessor() to HTD (also comments on if this is worth it
would be good).
bq.
bq.
bq. This addresses bug HBASE-4605.
bq. https://issues.apache.org/jira/browse/HBASE-4605
bq.
bq.
bq. Diffs
bq. -----
bq.
bq. src/main/java/org/apache/hadoop/hbase/HTableDescriptor.java 84a0d1a
bq. src/main/java/org/apache/hadoop/hbase/constraint/BaseConstraint.java
PRE-CREATION
bq. src/main/java/org/apache/hadoop/hbase/constraint/Constraint.java
PRE-CREATION
bq.
src/main/java/org/apache/hadoop/hbase/constraint/ConstraintException.java
PRE-CREATION
bq.
src/main/java/org/apache/hadoop/hbase/constraint/ConstraintProcessor.java
PRE-CREATION
bq. src/main/java/org/apache/hadoop/hbase/constraint/Constraints.java
PRE-CREATION
bq. src/main/java/org/apache/hadoop/hbase/constraint/IntegerConstraint.java
PRE-CREATION
bq. src/main/java/org/apache/hadoop/hbase/constraint/package-info.java
PRE-CREATION
bq. src/test/java/org/apache/hadoop/hbase/TestHTableDescriptor.java
PRE-CREATION
bq. src/test/java/org/apache/hadoop/hbase/constraint/AllFailConstraint.java
PRE-CREATION
bq. src/test/java/org/apache/hadoop/hbase/constraint/AllPassConstraint.java
PRE-CREATION
bq.
src/test/java/org/apache/hadoop/hbase/constraint/CheckConfigurationConstraint.java
PRE-CREATION
bq.
src/test/java/org/apache/hadoop/hbase/constraint/IntegrationTestConstraint.java
PRE-CREATION
bq.
src/test/java/org/apache/hadoop/hbase/constraint/RuntimeFailConstraint.java
PRE-CREATION
bq. src/test/java/org/apache/hadoop/hbase/constraint/TestConstraints.java
PRE-CREATION
bq.
src/test/java/org/apache/hadoop/hbase/constraint/TestIntegerConstraint.java
PRE-CREATION
bq. src/test/java/org/apache/hadoop/hbase/constraint/WorksConstraint.java
PRE-CREATION
bq.
bq. Diff: https://reviews.apache.org/r/2579/diff
bq.
bq.
bq. Testing
bq. -------
bq.
bq. Adding IntegrationTestConstraint and unit tests for Constraints and
IntegerConstraint. All of those pass.
bq.
bq.
bq. Thanks,
bq.
bq. Jesse
bq.
bq.
> Constraints
> -----------
>
> Key: HBASE-4605
> URL: https://issues.apache.org/jira/browse/HBASE-4605
> Project: HBase
> Issue Type: Improvement
> Components: client, coprocessors
> Affects Versions: 0.94.0
> Reporter: Jesse Yates
> Assignee: Jesse Yates
> Attachments: 4605.v7, constraint_as_cp.txt, java_Constraint_v2.patch,
> java_HBASE-4605_v1.patch, java_HBASE-4605_v2.patch, java_HBASE-4605_v3.patch
>
>
> From Jesse's comment on dev:
> {quote}
> What I would like to propose is a simple interface that people can use to
> implement a 'constraint' (matching the classic database definition). This
> would help ease of adoption by helping HBase more easily check that box, help
> minimize code duplication across organizations, and lead to easier adoption.
> Essentially, people would implement a 'Constraint' interface for checking
> keys before they are put into a table. Puts that are valid get written to the
> table, but if not people can will throw an exception that gets propagated
> back to the client explaining why the put was invalid.
> Constraints would be set on a per-table basis and the user would be expected
> to ensure the jars containing the constraint are present on the machines
> serving that table.
> Yes, people could roll their own mechanism for doing this via coprocessors
> each time, but this would make it easier to do so, so you only have to
> implement a very minimal interface and not worry about the specifics.
> {quote}
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