Charles Connell created HDFS-17685:
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Summary: Option to explicitly choose DFS client lease renewal
interval
Key: HDFS-17685
URL: https://issues.apache.org/jira/browse/HDFS-17685
Project: Hadoop HDFS
Issue Type: Improvement
Components: dfsclient
Reporter: Charles Connell
Currently, DFSClients send lease renewals to the NameNode at an interval equal
to half of {{ipc.client.rpc-timeout.ms}}. At my company, we are interested in
use short DFS client timeouts (< 10 seconds). However, we're currently hesitant
to do so because that would flood the NameNode with lease renewals.
I propose a setting {{dfs.client.lease.renewal.interval.ms}} that, if nonzero,
would be used as the lease renewal interval instead of
{{ipc.client.rpc-timeout.ms / 2}}. This would be useful for advanced users that
want to control their RPC timeout and lease renewals separately.
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