HBASE-28716: Users of QuotaRetriever should pass an existing connection (master) #6065
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unit test failure appears unrelated |
ndimiduk
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Jul 17, 2024
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I think this kind of change is the correct thing to do. In principal, our non-service classes should never manage their own Connection instances and instead rely on a caller to provide one. However, we need to execute this change according to our deprecation policy.
| * Should QutoaRetriever manage the state of the connection, or leave it be. | ||
| */ | ||
| private boolean isManagedConnection = false; | ||
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| QuotaRetriever() { |
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What a weird API. This class is decorated as IA.Public but it's only created via these static factory method? Any what's with using the default constructor + an init method -- what happened to RAII ?’
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Are non-public methods of an IA.Public class required to go through a deprecation cycle, or only public methods?
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Okay, then this PR is complying with the deprecation policy now
| * @return the QuotaRetriever | ||
| * @throws IOException if a remote or network exception occurs | ||
| */ | ||
| public static QuotaRetriever open(final Configuration conf) throws IOException { | ||
| return open(conf, null); | ||
| public static QuotaRetriever open(final Connection conn) throws IOException { |
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Because this is IA.Public, you cannot make these blanket changes in one pass. You'll need to observe a deprecation cycle through a major release in order to make breaking changes to the public API.
We document this in depth over on https://hbase.apache.org/book.html#hbase.versioning
If we're going through the trouble to make breaking changes, let's push RAII and do away with the parameterless constructor + init method.
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+1 for the deprecation cycle.
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If we're going through the trouble to make breaking changes, let's push RAII and do away with the parameterless constructor + init method.
Since we're opening this worm-can, how about we get rid of these static constructor methods and use constructors like a normal object?
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ndimiduk
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Jul 18, 2024
| * @return the QuotaRetriever | ||
| * @throws IOException if a remote or network exception occurs | ||
| */ | ||
| public static QuotaRetriever open(final Configuration conf) throws IOException { | ||
| return open(conf, null); | ||
| public static QuotaRetriever open(final Connection conn) throws IOException { |
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If we're going through the trouble to make breaking changes, let's push RAII and do away with the parameterless constructor + init method.
Since we're opening this worm-can, how about we get rid of these static constructor methods and use constructors like a normal object?
| @@ -168,7 +168,7 @@ Multimap<TableName, String> getSnapshotsToComputeSize() throws IOException { | |||
| filter.addTypeFilter(QuotaType.SPACE); | |||
| try (Admin admin = conn.getAdmin()) { | |||
| // Pull all of the tables that have quotas (direct, or from namespace) | |||
| for (QuotaSettings qs : QuotaRetriever.open(conf, filter)) { | |||
| for (QuotaSettings qs : QuotaRetriever.open(conn, filter)) { | |||
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Would you mind also promoting uses of the QuotaRetriever object up to try-with-resource blocks? In this particular case, it looks like we never close the object.
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Yep, you got it!
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🎊 +1 overall
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💔 -1 overall
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Unit test failure looks unrelated |
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apache#6065) Signed-off-by: Nick Dimiduk <[email protected]> Signed-off-by: Pankaj Kumar <[email protected]>
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apache#6065) Signed-off-by: Nick Dimiduk <[email protected]> Signed-off-by: Pankaj Kumar <[email protected]>
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apache#6065) Signed-off-by: Nick Dimiduk <[email protected]> Signed-off-by: Pankaj Kumar <[email protected]>
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#6065) Signed-off-by: Nick Dimiduk <[email protected]> Signed-off-by: Pankaj Kumar <[email protected]>
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#6065) Signed-off-by: Nick Dimiduk <[email protected]> Signed-off-by: Pankaj Kumar <[email protected]> Co-authored-by: Charles Connell <[email protected]>
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#6065) Signed-off-by: Nick Dimiduk <[email protected]> Signed-off-by: Pankaj Kumar <[email protected]> Co-authored-by: Charles Connell <[email protected]>
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apache#6065) (#107) Signed-off-by: Nick Dimiduk <[email protected]> Signed-off-by: Pankaj Kumar <[email protected]> Co-authored-by: Nick Dimiduk <[email protected]>
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Every call to
HBaseAdmin#getQuota()opens a newConnection, and then closes it. As far as I can tell, this is pointless, since it could use the existingConnectionobject held by theHBaseAdmin. Change this and other uses of QuotaRetriever to use existing Connections.