simbadzina commented on code in PR #4311:
URL: https://github.com/apache/hadoop/pull/4311#discussion_r966184747
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hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/NameNodeProxiesClient.java:
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@@ -349,6 +349,9 @@ public static ClientProtocol
createProxyWithAlignmentContext(
boolean withRetries, AtomicBoolean fallbackToSimpleAuth,
AlignmentContext alignmentContext)
throws IOException {
+ if (alignmentContext == null) {
Review Comment:
Clients need to be using the
"org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider" for
them to have an alignment context in the ProxyProvider.
I think we need a new flag on the client to enable observer reads. And
overriding the null would be behind this flag.
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