bshashikant commented on a change in pull request #40: HDDS-2285. GetBlock and 
ReadChunk command from the client should be s…
URL: https://github.com/apache/hadoop-ozone/pull/40#discussion_r338982546
 
 

 ##########
 File path: 
hadoop-hdds/client/src/main/java/org/apache/hadoop/hdds/scm/XceiverClientGrpc.java
 ##########
 @@ -107,6 +111,7 @@ public XceiverClientGrpc(Pipeline pipeline, Configuration 
config,
         OzoneConfigKeys.OZONE_NETWORK_TOPOLOGY_AWARE_READ_KEY,
         OzoneConfigKeys.OZONE_NETWORK_TOPOLOGY_AWARE_READ_DEFAULT);
     this.caCert = caCert;
+    this.getBlockDNcache = new HashMap<>();
 
 Review comment:
   yes, this should be concurrent.

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