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https://issues.apache.org/jira/browse/HDFS-17272?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17793149#comment-17793149
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ASF GitHub Bot commented on HDFS-17272:
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lfxy commented on code in PR #6319:
URL: https://github.com/apache/hadoop/pull/6319#discussion_r1414931491
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hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/NNThroughputBenchmark.java:
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@@ -1346,9 +1376,9 @@ void printResults() {
class ReplicationStats extends OperationStatsBase {
static final String OP_REPLICATION_NAME = "replication";
static final String OP_REPLICATION_USAGE =
- "-op replication [-datanodes T] [-nodesToDecommission D] " +
+ "-op replication [-datanodes T] [-nodesToDecommission N] " +
Review Comment:
I think D denote dir.
> NNThroughputBenchmark should support specifying the base directory for
> multi-client test
> ----------------------------------------------------------------------------------------
>
> Key: HDFS-17272
> URL: https://issues.apache.org/jira/browse/HDFS-17272
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: namenode
> Affects Versions: 3.4.0
> Reporter: caozhiqiang
> Assignee: caozhiqiang
> Priority: Major
> Labels: pull-request-available
>
> Currently, NNThroughputBenchmark does not support specifying the base
> directory, therefore does not support multiple clients performing stress
> testing at the same time. However, for high-performance namenode machine,
> only one client submitting stress test can not make the namenode rpc access
> reach the bottleneck. Therefore, multiple clients are required for parallel
> testing to make the namenode pressure reach the level of the large-scale
> production cluster.
> So I specify the base directory through the -baseDirName parameter to support
> multiple clients submitting stress tests at the same time.
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