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https://issues.apache.org/jira/browse/HDFS-10167?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vinayakumar B deleted HDFS-10167:
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> CLONE - Erasure Coding: when recovering lost blocks, logs can be too verbose
> and hurt performance
> -------------------------------------------------------------------------------------------------
>
> Key: HDFS-10167
> URL: https://issues.apache.org/jira/browse/HDFS-10167
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: dragon
> Assignee: Rui Li
>
> When we test reading data with datanodes killed,
> {{DFSInputStream::getBestNodeDNAddrPair}} becomes a hot spot method and
> effectively blocks the client JVM. This log seems too verbose:
> {code}
> if (chosenNode == null) {
> DFSClient.LOG.warn("No live nodes contain block " + block.getBlock() +
> " after checking nodes = " + Arrays.toString(nodes) +
> ", ignoredNodes = " + ignoredNodes);
> return null;
> }
> {code}
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