ashvina commented on a change in pull request #1480: HDFS-14857. FS operations
fail in HA mode: DataNode fails to connect to NameNode
URL: https://github.com/apache/hadoop/pull/1480#discussion_r332152664
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File path:
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/server/namenode/ha/ConfiguredFailoverProxyProvider.java
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@@ -61,7 +63,10 @@ public ConfiguredFailoverProxyProvider(Configuration conf,
URI uri,
}
@Override
- public void performFailover(T currentProxy) {
+ public void performFailover(T currentProxy) {
+ //reset the IP address in case the stale IP was the cause for failover
+ LOG.info("Resetting cached proxy: " + currentProxyIndex);
+ resetProxyAddress(proxies, currentProxyIndex);
Review comment:
IIUC, this call will reset address of the proxy which will not be used by
the caller of `getProxy`. The next instruction will change proxy index, and the
new proxy may still have old ip address. Would it be better to reset ip of the
proxy, if needed, after the proxy index has changed?
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