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Wei-Chiu Chuang resolved HADOOP-17837. -------------------------------------- Fix Version/s: 3.4.0 Resolution: Fixed Thanks [~bbeaudreault]. The PR is merged. > Make it easier to debug UnknownHostExceptions from NetUtils.connect > ------------------------------------------------------------------- > > Key: HADOOP-17837 > URL: https://issues.apache.org/jira/browse/HADOOP-17837 > Project: Hadoop Common > Issue Type: Improvement > Reporter: Bryan Beaudreault > Assignee: Bryan Beaudreault > Priority: Minor > Labels: pull-request-available > Fix For: 3.4.0 > > Time Spent: 0.5h > Remaining Estimate: 0h > > Most UnknownHostExceptions thrown throughout hadoop include a useful message, > either the hostname that was not found or some other descriptor of the > problem. The UnknownHostException thrown from NetUtils.connect only includes > the [message of the underlying > UnresolvedAddressException|https://github.com/apache/hadoop/blob/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/net/NetUtils.java#L592]. > If you take a look at the source for UnresolvedAddressException, [it only > has a no-args > constructor|https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/nio/channels/UnresolvedAddressException.html] > (java11, but same is true in other versions). So it never has a message, > meaning the UnknownHostException message is empty. > We should include the endpoint.toString() in the UnknownHostException thrown > by NetUtils.connect -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org