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Posted to common-issues@hadoop.apache.org by "Weisen Han (JIRA)" <ji...@apache.org> on 2017/06/16 15:30:00 UTC
[jira] [Created] (HADOOP-14533) TraceAdmin#run, the size of args
cannot be less than zero,which is a linklist
Weisen Han created HADOOP-14533:
-----------------------------------
Summary: TraceAdmin#run, the size of args cannot be less than zero,which is a linklist
Key: HADOOP-14533
URL: https://issues.apache.org/jira/browse/HADOOP-14533
Project: Hadoop Common
Issue Type: Bug
Affects Versions: 3.0.0-alpha3
Reporter: Weisen Han
{code}
@Override
public int run(String argv[]) throws Exception {
LinkedList<String> args = new LinkedList<String>();
……
if (args.size() < 0) {
System.err.println("You must specify an operation.");
return 1;
}
……
}
{code}
From the code above, the {{args}} is a linklist obejct, so it cannot be less than zero.meaning that code below is redundant
{code}
if (args.size() < 0) {
System.err.println("You must specify an operation.");
return 1;
}
{code}
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