Zhe Zhang created HDFS-10544:
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Summary: Balancer doesn't work with IPFailoverProxyProvider
Key: HDFS-10544
URL: https://issues.apache.org/jira/browse/HDFS-10544
Project: Hadoop HDFS
Issue Type: Bug
Reporter: Zhe Zhang
Assignee: Zhe Zhang
Right now {{Balancer}} gets the NN URIs through {{DFSUtil#getNameServiceUris}},
which returns logical URIs in HA is enabled. If {{IPFailoverProxyProvider}} is
used, {{Balancer}} will not be able to start.
I think the bug is at {{DFSUtil#getNameServiceUris}}:
{code}
for (String nsId : getNameServiceIds(conf)) {
if (HAUtil.isHAEnabled(conf, nsId)) {
// Add the logical URI of the nameservice.
try {
ret.add(new URI(HdfsConstants.HDFS_URI_SCHEME + "://" + nsId));
{code}
Then {{if}} clause should also consider if the {{FailoverProxyProvider}} has
{{useLogicalURI}} enabled. If not, {{getNameServiceUris}} should try to resolve
the physical URI for this nsId.
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