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The following commit(s) were added to refs/heads/branch-3.2 by this push:
new bc3c4a3 HDFS-15633. Avoid redundant RPC calls for getDiskStatus.
(#2386). Contributed by Ayush Saxena.
bc3c4a3 is described below
commit bc3c4a3268f516b3b85236d5f7f91730bc015e7c
Author: Ayush Saxena <[email protected]>
AuthorDate: Fri Oct 16 10:36:24 2020 +0530
HDFS-15633. Avoid redundant RPC calls for getDiskStatus. (#2386).
Contributed by Ayush Saxena.
---
.../src/main/java/org/apache/hadoop/hdfs/DFSClient.java | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
diff --git
a/hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DFSClient.java
b/hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DFSClient.java
index c3a00c9..c32d029 100755
---
a/hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DFSClient.java
+++
b/hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DFSClient.java
@@ -1944,8 +1944,17 @@ public class DFSClient implements java.io.Closeable,
RemotePeerFactory,
* @see ClientProtocol#getStats()
*/
public FsStatus getDiskStatus() throws IOException {
- return new FsStatus(getStateByIndex(0),
- getStateByIndex(1), getStateByIndex(2));
+ try (TraceScope ignored = tracer.newScope("getStats")) {
+ long[] states = namenode.getStats();
+ return new FsStatus(getStateAtIndex(states, 0),
+ getStateAtIndex(states, 1), getStateAtIndex(states, 2));
+ } catch (RemoteException re) {
+ throw re.unwrapRemoteException();
+ }
+ }
+
+ private long getStateAtIndex(long[] states, int index) {
+ return states.length > index ? states[index] : -1;
}
/**
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