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https://issues.apache.org/jira/browse/GIRAPH-1099?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dionysios Logothetis resolved GIRAPH-1099.
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Resolution: Fixed
> Bypass all DNC calls in Giraph
> ------------------------------
>
> Key: GIRAPH-1099
> URL: https://issues.apache.org/jira/browse/GIRAPH-1099
> Project: Giraph
> Issue Type: Bug
> Reporter: Sergey Edunov
> Assignee: Sergey Edunov
> Priority: Major
>
> After GIRAPH-1034 we have reduced the number of DNS lookups and reverse DNS
> lookups dramatically. However, we still see failures occasionally and it
> would be great to completely bypass DNS if PREFER_IP_ADDRESSES is set.
> Currently I'm aware of two places that make DNS lookups:
> One in BspService:
> this.hostname = conf.getLocalHostname();
> Another one is probably related:
> java.net.UnknownHostException: ***.com: unknown error
> 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:60)
> at org.apache.zookeeper.ZooKeeper.<init>(ZooKeeper.java:445)
> at org.apache.zookeeper.ZooKeeper.<init>(ZooKeeper.java:380)
> at org.apache.giraph.zk.ZooKeeperExt.<init>(ZooKeeperExt.java:114)
> at org.apache.giraph.bsp.BspService.<init>(BspService.java:281)
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