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HDFS-16092. Avoid creating LayoutFlags redundant objects (#3150)

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(cherry picked from commit 93a1685073)
This commit is contained in:
Viraj Jasani 2021-06-29 15:01:02 +05:30 committed by Wei-Chiu Chuang
parent 47b3939009
commit 8538881710
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1 changed files with 5 additions and 5 deletions
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10
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocol/LayoutFlags.java
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@ -36,14 +36,15 @@
*/ */
@InterfaceAudience.Private @InterfaceAudience.Private
public class LayoutFlags { public class LayoutFlags {
/** /**
* Load a LayoutFlags object from a stream. * Read next int from given input stream. If the value is not 0 (unsupported
* feature flags), throw appropriate IOException.
* *
* @param in The stream to read from. * @param in The stream to read from.
* @throws IOException * @throws IOException If next byte read from given stream is not 0.
*/ */
public static LayoutFlags read(DataInputStream in) public static void read(DataInputStream in) throws IOException {
throws IOException {
int length = in.readInt(); int length = in.readInt();
if (length < 0) { if (length < 0) {
throw new IOException("The length of the feature flag section " + throw new IOException("The length of the feature flag section " +
@ -52,7 +53,6 @@ public static LayoutFlags read(DataInputStream in)
throw new IOException("Found feature flags which we can't handle. " + throw new IOException("Found feature flags which we can't handle. " +
"Please upgrade your software."); "Please upgrade your software.");
} }
return new LayoutFlags();
} }
private LayoutFlags() { private LayoutFlags() {