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HDFS-16359. RBF: RouterRpcServer#invokeAtAvailableNs does not take effect when retrying (#3731). Contributed by tomscut.

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Reviewed-by: Inigo Goiri <inigoiri@apache.org>
Signed-off-by: Ayush Saxena <ayushsaxena@apache.org>
This commit is contained in:
litao 2021-12-02 21:40:35 +08:00 committed by GitHub
parent b34dcb5b3a
commit 196935a8d2
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 42 additions and 4 deletions
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10
hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/RouterRpcServer.java
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@ -696,7 +696,7 @@ <T> T invokeAtAvailableNs(RemoteMethod method, Class<T> clazz)
ioe.getClass().getSimpleName());
throw ioe;
}
Set<FederationNamespaceInfo> nssWithoutFailed = getNameSpaceInfo(nsId);
Set<FederationNamespaceInfo> nssWithoutFailed = getNameSpaceInfo(nss, nsId);
return invokeOnNs(method, clazz, ioe, nssWithoutFailed);
}
}
@ -722,13 +722,15 @@ <T> T invokeOnNs(RemoteMethod method, Class<T> clazz, IOException ioe,
/**
* Get set of namespace info's removing the already invoked namespaceinfo.
* @param nsId already invoked namespace id
* @param nss List of namespaces in the federation.
* @param nsId Already invoked namespace id.
* @return List of name spaces in the federation on
* removing the already invoked namespaceinfo.
*/
private Set<FederationNamespaceInfo> getNameSpaceInfo(String nsId) {
private static Set<FederationNamespaceInfo> getNameSpaceInfo(
final Set<FederationNamespaceInfo> nss, final String nsId) {
Set<FederationNamespaceInfo> namespaceInfos = new HashSet<>();
for (FederationNamespaceInfo ns : namespaceInfos) {
for (FederationNamespaceInfo ns : nss) {
if (!nsId.equals(ns.getNameserviceId())) {
namespaceInfos.add(ns);
}

36
hadoop-hdfs-project/hadoop-hdfs-rbf/src/test/java/org/apache/hadoop/hdfs/server/federation/router/TestRouterRPCMultipleDestinationMountTableResolver.java
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@ -20,6 +20,7 @@
import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
@ -39,6 +40,7 @@
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.FSDataOutputStream;
import org.apache.hadoop.fs.FsServerDefaults;
import org.apache.hadoop.fs.Options.Rename;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.permission.AclEntry;
@ -643,6 +645,40 @@ public void testContentSummaryMultipleDestWithMaxValue()
assertEquals(ssQuota, cs.getSpaceQuota());
}
/**
* Test RouterRpcServer#invokeAtAvailableNs on mount point with multiple destinations
* and making a one of the destination's subcluster unavailable.
*/
@Test
public void testInvokeAtAvailableNs() throws IOException {
// Create a mount point with multiple destinations.
Path path = new Path("/testInvokeAtAvailableNs");
Map<String, String> destMap = new HashMap<>();
destMap.put("ns0", "/testInvokeAtAvailableNs");
destMap.put("ns1", "/testInvokeAtAvailableNs");
nnFs0.mkdirs(path);
nnFs1.mkdirs(path);
MountTable addEntry =
MountTable.newInstance("/testInvokeAtAvailableNs", destMap);
addEntry.setQuota(new RouterQuotaUsage.Builder().build());
addEntry.setDestOrder(DestinationOrder.RANDOM);
addEntry.setFaultTolerant(true);
assertTrue(addMountTable(addEntry));
// Make one subcluster unavailable.
MiniDFSCluster dfsCluster = cluster.getCluster();
dfsCluster.shutdownNameNode(0);
try {
// Verify that #invokeAtAvailableNs works by calling #getServerDefaults.
RemoteMethod method = new RemoteMethod("getServerDefaults");
FsServerDefaults serverDefaults =
rpcServer.invokeAtAvailableNs(method, FsServerDefaults.class);
assertNotNull(serverDefaults);
} finally {
dfsCluster.restartNameNode(0);
}
}
/**
* Test write on mount point with multiple destinations
* and making a one of the destination's subcluster unavailable.