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HDFS-14722. RBF: GetMountPointStatus should return mountTable information when getFileInfoAll throw IOException. Contributed by xuzq.

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This commit is contained in:
Ayush Saxena 2019-08-24 08:47:43 +05:30
parent b661dcf563
commit d2225c8ca8
2 changed files with 61 additions and 4 deletions
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8
hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/RouterClientProtocol.java
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@ -1913,6 +1913,10 @@ private HdfsFileStatus getMountPointStatus(
MountTableResolver mountTable = (MountTableResolver) subclusterResolver;
MountTable entry = mountTable.getMountPoint(mName);
if (entry != null) {
permission = entry.getMode();
owner = entry.getOwnerName();
group = entry.getGroupName();
RemoteMethod method = new RemoteMethod("getFileInfo",
new Class<?>[] {String.class}, new RemoteParam());
HdfsFileStatus fInfo = getFileInfoAll(
@ -1922,10 +1926,6 @@ private HdfsFileStatus getMountPointStatus(
owner = fInfo.getOwner();
group = fInfo.getGroup();
childrenNum = fInfo.getChildrenNum();
} else {
permission = entry.getMode();
owner = entry.getOwnerName();
group = entry.getGroupName();
}
}
} catch (IOException e) {

57
hadoop-hdfs-project/hadoop-hdfs-rbf/src/test/java/org/apache/hadoop/hdfs/server/federation/router/TestRouterMountTable.java
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@ -24,6 +24,7 @@
import java.io.FileNotFoundException;
import java.io.IOException;
import java.net.URISyntaxException;
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
@ -53,6 +54,7 @@
import org.apache.hadoop.hdfs.server.federation.store.protocol.RemoveMountTableEntryRequest;
import org.apache.hadoop.hdfs.server.federation.store.records.MountTable;
import org.apache.hadoop.security.AccessControlException;
import org.apache.hadoop.security.UserGroupInformation;
import org.apache.hadoop.test.LambdaTestUtils;
import org.apache.hadoop.util.Time;
import org.junit.After;
@ -254,6 +256,61 @@ public void testListFilesTime() throws Exception {
}
}
/**
* Verify that the file/dir status with IOException in getMountPointStatus.
*/
@Test
public void testGetMountPointStatusWithIOException()
throws IOException, InterruptedException {
try {
// Add mount table entry.
MountTable addEntry = MountTable.newInstance("/testA",
Collections.singletonMap("ns0", "/testA"));
assertTrue(addMountTable(addEntry));
addEntry = MountTable.newInstance("/testA/testB",
Collections.singletonMap("ns0", "/testA/testB"));
assertTrue(addMountTable(addEntry));
addEntry = MountTable.newInstance("/testB",
Collections.singletonMap("ns0", "/test1/testB"));
addEntry.setOwnerName("userB");
addEntry.setGroupName("groupB");
assertTrue(addMountTable(addEntry));
assertTrue(nnFs0.mkdirs(new Path("/test1")));
nnFs0.setPermission(new Path("/test1"),
FsPermission.createImmutable((short) 0700));
// Use mock user to getListing through router.
UserGroupInformation user = UserGroupInformation.createUserForTesting(
"mock_user", new String[] {"mock_group"});
LambdaTestUtils.doAs(user, () -> getListing("/testA"));
} finally {
nnFs0.delete(new Path("/test1"), true);
}
}
/**
* GetListing of testPath through router.
*/
private void getListing(String testPath)
throws IOException, URISyntaxException {
ClientProtocol clientProtocol1 =
routerContext.getClient().getNamenode();
DirectoryListing listing = clientProtocol1.getListing(testPath,
HdfsFileStatus.EMPTY_NAME, false);
assertEquals(1, listing.getPartialListing().length);
HdfsFileStatus fileStatus = listing.getPartialListing()[0];
String currentOwner = fileStatus.getOwner();
String currentGroup = fileStatus.getGroup();
String currentFileName =
fileStatus.getFullPath(new Path("/")).getName();
assertEquals("testB", currentFileName);
assertEquals("userB", currentOwner);
assertEquals("groupB", currentGroup);
}
/**
* Verify permission for a mount point when the actual destination is not
* present. It returns the permissions of the mount point.