[ https://issues.apache.org/jira/browse/HDFS-17333?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jian Zhang updated HDFS-17333: ------------------------------ Description: Currently, when dfsclient is started, it will parse all hosts of all ns: at DFSUtilClient#getAddresses(conf, null, addressKey) at AbstractNNFailoverProxyProvider#getProxyAddresses(URI uri, String addressKey) If the current environment where the client is located causes resolution of host->ip to be very slow, the existing logic will undoubtedly take a long time when there are too many NSs. This patch supports lazy resolution of host->ip, which will only be resolved when the host needs to be accessed. was:I will give a detailed description later. > Support lazy resolve host->ip. > ------------------------------ > > Key: HDFS-17333 > URL: https://issues.apache.org/jira/browse/HDFS-17333 > Project: Hadoop HDFS > Issue Type: Improvement > Reporter: Jian Zhang > Assignee: Jian Zhang > Priority: Major > Labels: pull-request-available > > Currently, when dfsclient is started, it will parse all hosts of all ns: > at DFSUtilClient#getAddresses(conf, null, addressKey) > at AbstractNNFailoverProxyProvider#getProxyAddresses(URI uri, > String addressKey) > If the current environment where the client is located causes resolution of > host->ip to be very slow, the existing logic will undoubtedly take a long > time when there are too many NSs. > This patch supports lazy resolution of host->ip, which will only be resolved > when the host needs to be accessed. -- This message was sent by Atlassian Jira (v8.20.10#820010) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org