sunchao commented on a change in pull request #2080:
URL: https://github.com/apache/hadoop/pull/2080#discussion_r443091398
##########
File path:
hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/RouterWebHdfsMethods.java
##########
@@ -454,19 +454,12 @@ private URI redirectURI(final Router router, final
UserGroupInformation ugi,
private DatanodeInfo chooseDatanode(final Router router,
final String path, final HttpOpParam.Op op, final long openOffset,
final String excludeDatanodes) throws IOException {
- // We need to get the DNs as a privileged user
final RouterRpcServer rpcServer = getRPCServer(router);
- UserGroupInformation loginUser = UserGroupInformation.getLoginUser();
- RouterRpcServer.setCurrentUser(loginUser);
-
DatanodeInfo[] dns = null;
try {
- dns = rpcServer.getDatanodeReport(DatanodeReportType.LIVE);
+ dns = rpcServer.getCachedDatanodeReport(DatanodeReportType.LIVE);
Review comment:
Thanks. I filed https://issues.apache.org/jira/browse/HDFS-15423 to
track this.
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