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https://issues.apache.org/jira/browse/HBASE-4220?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13086654#comment-13086654
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Todd Lipcon commented on HBASE-4220:
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I think the constructor of HRegionLocation should create and cache the
HServerAddress
> Lots of DNS queries from client
> -------------------------------
>
> Key: HBASE-4220
> URL: https://issues.apache.org/jira/browse/HBASE-4220
> Project: HBase
> Issue Type: Bug
> Components: client
> Affects Versions: 0.92.0
> Reporter: Todd Lipcon
> Priority: Critical
> Fix For: 0.92.0
>
>
> In running a YCSB workload, I managed to DDOS a DNS server since it seems to
> be flooding lots of DNS requests. Installing nscd on the client machines
> improved throughput by a factor of 6 and stopped killing the server. These
> are long-running clients, so it's not clear why we do so many lookups.
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