bd2019us created AMBARI-25241:
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Summary: Date.getTime() can be changed to
System.currentTimeMillis()
Key: AMBARI-25241
URL: https://issues.apache.org/jira/browse/AMBARI-25241
Project: Ambari
Issue Type: Bug
Reporter: bd2019us
Location:
contrib/views/wfmanager/src/main/java/org/apache/oozie/ambari/view/repo/BaseRepo.java:89
Hello,
I found that Date.getTime() can be changed to light method
System.currentTimeMillis(),which can avoid creating the temporary Date object.
new Date() is a thin wrapper of method System.currentTimeMillis(). The
performance will be greatly damaged if it is invoked too much times.
According to my local testing at the same environment,
System.currentTimeMillis() can achieve a speedup to 5 times (435ms vs 2073ms),
when these two methods are invoked 5,000,000 times.
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