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HDFS-14224. RBF: NPE in getContentSummary() for getEcPolicy() in case of multiple destinations. Contributed by Ayush Saxena.

This commit is contained in:
Brahma Reddy Battula 2019-01-28 09:03:32 +05:30
parent 8b9b58b58a
commit acdf911c01
2 changed files with 23 additions and 0 deletions
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7
hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/RouterClientProtocol.java
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@ -1635,6 +1635,7 @@ public class RouterClientProtocol implements ClientProtocol {
long quota = 0;
long spaceConsumed = 0;
long spaceQuota = 0;
String ecPolicy = "";
for (ContentSummary summary : summaries) {
length += summary.getLength();
@ -1643,6 +1644,11 @@ public class RouterClientProtocol implements ClientProtocol {
quota += summary.getQuota();
spaceConsumed += summary.getSpaceConsumed();
spaceQuota += summary.getSpaceQuota();
// We return from the first response as we assume that the EC policy
// of each sub-cluster is same.
if (ecPolicy.isEmpty()) {
ecPolicy = summary.getErasureCodingPolicy();
}
}
ContentSummary ret = new ContentSummary.Builder()
@ -1652,6 +1658,7 @@ public class RouterClientProtocol implements ClientProtocol {
.quota(quota)
.spaceConsumed(spaceConsumed)
.spaceQuota(spaceQuota)
.erasureCodingPolicy(ecPolicy)
.build();
return ret;
}

16
hadoop-hdfs-project/hadoop-hdfs-rbf/src/test/java/org/apache/hadoop/hdfs/server/federation/router/TestRouterRpcMultiDestination.java
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@ -41,6 +41,7 @@ import java.util.TreeSet;
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hdfs.DistributedFileSystem;
import org.apache.hadoop.hdfs.protocol.ClientProtocol;
import org.apache.hadoop.hdfs.protocol.DirectoryListing;
import org.apache.hadoop.hdfs.protocol.HdfsFileStatus;
@ -229,6 +230,21 @@ public class TestRouterRpcMultiDestination extends TestRouterRpc {
testRename2(getRouterContext(), filename1, renamedFile, false);
}
@Test
public void testGetContentSummaryEc() throws Exception {
DistributedFileSystem routerDFS =
(DistributedFileSystem) getRouterFileSystem();
Path dir = new Path("/");
String expectedECPolicy = "RS-6-3-1024k";
try {
routerDFS.setErasureCodingPolicy(dir, expectedECPolicy);
assertEquals(expectedECPolicy,
routerDFS.getContentSummary(dir).getErasureCodingPolicy());
} finally {
routerDFS.unsetErasureCodingPolicy(dir);
}
}
@Test
public void testSubclusterDown() throws Exception {
final int totalFiles = 6;