rowe created HADOOP-14148:
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Summary: hdfs command handing in futex
Key: HADOOP-14148
URL: https://issues.apache.org/jira/browse/HADOOP-14148
Project: Hadoop Common
Issue Type: Bug
Affects Versions: 2.7.3
Environment: Linux 3.10.104 x86_64
java version "1.7.0_80"
Reporter: rowe
any hdfs comand on specify namenode return slowly. For example
# strace hdfs haadmin -getServiceState nn1 shows haning in
futex(0x7f155b7ce9d0, FUTEX_WAIT, 23073, NULL
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