steveloughran commented on a change in pull request #1803: HADOOP-16621.
[pb-upgrade] Remove Protobuf classes from signatures of Public APIs.
URL: https://github.com/apache/hadoop/pull/1803#discussion_r365744876
##########
File path:
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/ProtobufHelper.java
##########
@@ -46,4 +52,67 @@ public static IOException
getRemoteException(ServiceException se) {
}
return e instanceof IOException ? (IOException) e : new IOException(se);
}
+
+
+ /**
+ * Map used to cache fixed strings to ByteStrings. Since there is no
+ * automatic expiration policy, only use this for strings from a fixed, small
+ * set.
+ * <p/>
+ * This map should not be accessed directly. Used the getFixedByteString
+ * methods instead.
+ */
+ private static ConcurrentHashMap<Object, ByteString> fixedByteStringCache =
Review comment:
final?
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