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https://issues.apache.org/jira/browse/HADOOP-16282?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16831162#comment-16831162
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Giovanni Matteo Fumarola commented on HADOOP-16282:
---------------------------------------------------
Thanks [~ayushtkn].
My only concern remain on the exception handling.
{code:java}
// Old code
try {
fReader = new InputStreamReader(
new FileInputStream(procfsMemFile), Charset.forName("UTF-8"));
in = new BufferedReader(fReader);
} catch (FileNotFoundException f) {
{code}
What instruction(s) or part of it can throw FileNotFoundExc?
{code:java}
// New code
try {
fReader = new InputStreamReader(
Files.newInputStream(Paths.get(procfsMemFile)),
Charset.forName("UTF-8"));
in = new BufferedReader(fReader);
} catch (IOException f) {
{code}
What instruction(s) or part of it can throw IOException?
> Avoid FileStream to improve performance
> ---------------------------------------
>
> Key: HADOOP-16282
> URL: https://issues.apache.org/jira/browse/HADOOP-16282
> Project: Hadoop Common
> Issue Type: Improvement
> Reporter: Ayush Saxena
> Assignee: Ayush Saxena
> Priority: Major
> Attachments: HADOOP-16282-01.patch, HADOOP-16282-02.patch
>
>
> The FileInputStream and FileOutputStream classes contains a finalizer method
> which will cause garbage collection pauses. See
> [JDK-8080225|https://bugs.openjdk.java.net/browse/JDK-8080225] for details.
> The FileReader and FileWriter constructors instantiate FileInputStream and
> FileOutputStream, again causing garbage collection issues while finalizer
> methods are called.
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