HDFS-17596. [ARR] RouterStoragePolicy supports asynchronous rpc. #6988
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KeeProMise
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Aug 13, 2024
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| import static org.apache.hadoop.hdfs.server.federation.router.async.AsyncUtil.asyncReturn; | ||
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| public class AsyncRouterStoragePolicy extends RouterStoragePolicy { |
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@hfutatzhanghb Hi, thanks for your contribution. Should we change the name of this class to RouterAsyncStoragePolicy?
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@KeeProMise Sir, thanks for reviewing. OK, i will fix it and we keep the same style for other Class name.
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| public BlockStoragePolicy getStoragePolicy(String path) | ||
| throws IOException { | ||
| rpcServer.checkOperation(NameNode.OperationCategory.READ, true); | ||
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| List<RemoteLocation> locations = | ||
| rpcServer.getLocationsForPath(path, false, false); | ||
| RemoteMethod method = new RemoteMethod("getStoragePolicy", | ||
| new Class<?>[] {String.class}, | ||
| new RemoteParam()); |
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This method does not seem to require asynchronous transformation, just use the parent class.
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Hi, @hfutatzhanghb HDFS-17545 has already been merged into HDFS-17531, please rebase your development branch using HDFS-17531. |
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KeeProMise
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Oct 9, 2024
.../src/main/java/org/apache/hadoop/hdfs/server/federation/router/RouterAsyncStoragePolicy.java
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...-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/RouterRpcServer.java
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| // If no namespace is available, throw IOException. | ||
| IOException io = new IOException("No namespace available."); | ||
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| asyncComplete(null); |
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Hi, @hfutatzhanghb IMO, asyncComplete(null) is not needed in this place.
| }); | ||
| }); | ||
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| asyncCatch((AsyncCatchFunction<T, IOException>)(ret, ex) -> { |
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KeeProMise
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Oct 13, 2024
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Hi, @hfutatzhanghb I found that the reason why the UT failed was that RouterRpcServer used RouterRpcClient instead of RouterAsyncRpcClient when calling the invokeOnNsAsync and invokeAtAvailableNsAsync methods in the UT, resulting in null.
I gave a fix suggestion, maybe you have a better approach.
| // If default Ns is present return result from that namespace. | ||
| if (!nsId.isEmpty()) { | ||
| asyncTry(() -> { | ||
| rpcClient.invokeSingle(nsId, method, clazz); |
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Hi @hfutatzhanghb this can fix UT
getRPCClient().invokeSingle(nsId, method, clazz);| String nsId = fnInfo.getNameserviceId(); | ||
| LOG.debug("Invoking {} on namespace {}", method, nsId); | ||
| asyncTry(() -> { | ||
| rpcClient.invokeSingle(nsId, method, clazz); |
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Same as above.
getRPCClient().invokeSingle(nsId, method, clazz);There was a problem hiding this comment.
@KeeProMise Sir, Thanks for your reviewing and pointing out the problem, i will fix it soonly.
...-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/RouterRpcServer.java
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KeeProMise
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Oct 14, 2024
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Hi @hfutatzhanghb LGTM! @Hexiaoqiao if you have time, please help to review the pr.
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Hexiaoqiao
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Oct 15, 2024
| @@ -791,6 +800,36 @@ <T> T invokeAtAvailableNs(RemoteMethod method, Class<T> clazz) | |||
| return invokeOnNs(method, clazz, io, nss); | |||
| } | |||
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| <T> T invokeAtAvailableNsAsync(RemoteMethod method, Class<T> clazz) | |||
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How about to split this changes to separate PR which is common update and not relate with StoragePolicy only. Others look good to me. Thanks.
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@Hexiaoqiao @KeeProMise Agree with you, sir. This PR depends on #7108
, I have splited this chanages to PR #7108. PTAL. thanks a lot.
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Hi @hfutatzhanghb , what's relationship between this PR and #7108 , any dependency? Thanks. |
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@Hexiaoqiao Sir, thanks for reviewing. #7108 implements methods invokeAtAvailableNsAsync which is needed by this PR. |
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LGTM. Let's wait #7108 check in first, then push this one forward. Thanks. |
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Hi @hfutatzhanghb @KeeProMise Consider that #7108 (which is approved now) is pending to check in. I think this one is ready to check in too after merge #7108 . BTW, we need rebase trunk again. Thanks. |
@Hexiaoqiao Thanks sir and Thanks @KeeProMise for push UT for #7108 . |
# Conflicts: # hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/RouterRpcServer.java
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@hfutatzhanghb @Hexiaoqiao Hi, I will merge this pr later, if no comment here. |
@hfutatzhanghb thanks for your contribution, and @Hexiaoqiao thanks for your review! merged |
hi, @Hexiaoqiao if you have time, please help to rebase trunk again, thanks! |
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…ache#6988). Contributed by hfutatzhanghb. Reviewed-by: Jian Zhang <keepromise@apache.org> Signed-off-by: He Xiaoqiao <hexiaoqiao@apache.org>
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…ache#6988). Contributed by hfutatzhanghb. Reviewed-by: Jian Zhang <keepromise@apache.org> Signed-off-by: He Xiaoqiao <hexiaoqiao@apache.org>
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…ache#6988). Contributed by hfutatzhanghb. Reviewed-by: Jian Zhang <keepromise@apache.org> Signed-off-by: He Xiaoqiao <hexiaoqiao@apache.org>
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…ache#6988). Contributed by hfutatzhanghb. Reviewed-by: Jian Zhang <keepromise@apache.org> Signed-off-by: He Xiaoqiao <hexiaoqiao@apache.org>
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…ache#6988). Contributed by hfutatzhanghb. Reviewed-by: Jian Zhang <keepromise@apache.org> Signed-off-by: He Xiaoqiao <hexiaoqiao@apache.org>
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…ache#6988). Contributed by hfutatzhanghb. Reviewed-by: Jian Zhang <keepromise@apache.org> Signed-off-by: He Xiaoqiao <hexiaoqiao@apache.org>
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Description of PR
The main new addition is RouterAsyncStoragePolicy, which extends RouterStoragePolicy so that supports asynchronous rpc.