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https://issues.apache.org/jira/browse/HDFS-9693?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tianyin Xu updated HDFS-9693:
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Status: Patch Available (was: Open)
> Trim the user config of `dfs.ha.namenode.id`
> --------------------------------------------
>
> Key: HDFS-9693
> URL: https://issues.apache.org/jira/browse/HDFS-9693
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: ha
> Affects Versions: 2.7.1
> Reporter: Tianyin Xu
> Priority: Minor
> Attachments: HDFS-9693.000.patch
>
>
> In
> {{hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/HAUtil.java}},
> we trim the config value of parameter {{dfs.ha.namenode.id}} in one place
> but not the other.
> {code}
> public static String getNameNodeId(Configuration conf, String nsId) {
> String namenodeId = conf.getTrimmed(DFS_HA_NAMENODE_ID_KEY);
> ...
> {code}
> {code}
> public static List<String> getNameNodeIdOfOtherNodes(Configuration conf,
> String nsId) {
> ...
> String myNNId = conf.get(DFSConfigKeys.DFS_HA_NAMENODE_ID_KEY);
> ...
> {code}
> The latter one would cause problem if the user's configs contains extra space.
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