You are viewing a plain text version of this content. The canonical link for it is here.
Posted to hdfs-dev@hadoop.apache.org by "dragon (JIRA)" <ji...@apache.org> on 2016/03/15 09:17:36 UTC
[jira] [Created] (HDFS-10167) CLONE - Erasure Coding: when
recovering lost blocks, logs can be too verbose and hurt performance
dragon created HDFS-10167:
-----------------------------
Summary: 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
Fix For: HDFS-7285
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}
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)