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https://issues.apache.org/jira/browse/ZOOKEEPER-2814?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16137354#comment-16137354
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Edward Ribeiro commented on ZOOKEEPER-2814:
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Hi [~nikbhi15],
FYI, the trim of the host string seems to be fixed on branch-3.5 and master,
doesn't it? See
https://github.com/apache/zookeeper/blob/branch-3.5/src/java/main/org/apache/zookeeper/common/StringUtils.java#L37
While it is not fixed on branch-3.4 yet:
https://github.com/apache/zookeeper/blob/branch-3.4/src/java/main/org/apache/zookeeper/client/ConnectStringParser.java#L65
I suggest that you add a method to check the host string with spaces after (and
before) the comma.
> Ignore space after comma in connection string
> ---------------------------------------------
>
> Key: ZOOKEEPER-2814
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2814
> Project: ZooKeeper
> Issue Type: Bug
> Affects Versions: 3.5.3
> Reporter: Viliam Durina
> Assignee: Nikhil Ashok Bhide
> Priority: Minor
>
> I'm using the following connection string:
> {{10.0.0.179:2181,<space>10.0.0.176:2181}}
> However, I get:
> {{java.net.UnknownHostException: 10.0.0.176: Name or service not known
> at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)
> at java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:928)
> at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1323)
> at java.net.InetAddress.getAllByName0(InetAddress.java:1276)
> at java.net.InetAddress.getAllByName(InetAddress.java:1192)
> at java.net.InetAddress.getAllByName(InetAddress.java:1126)
> at
> org.apache.zookeeper.client.StaticHostProvider.<init>(StaticHostProvider.java:61)
> at org.apache.zookeeper.ZooKeeper.<init>(ZooKeeper.java:445)
> at ...
> ...}}
> The problem was the space after the comma. I suggest to either make the space
> optional or produce error on it, as this is a real pain to spot. Using the
> space also makes the connect string more readable. Spaces are not allowed in
> domain names.
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