[
https://issues.apache.org/jira/browse/CRUNCH-683?focusedWorklogId=232852&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-232852
]
ASF GitHub Bot logged work on CRUNCH-683:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 25/Apr/19 13:21
Start Date: 25/Apr/19 13:21
Worklog Time Spent: 10m
Work Description: jonhemphill commented on pull request #23: CRUNCH-683
Avoid unnecessary listStatus calls from getPathSize computation
URL: https://github.com/apache/crunch/pull/23#discussion_r278546913
##########
File path:
crunch-core/src/main/java/org/apache/crunch/io/SourceTargetHelper.java
##########
@@ -41,17 +41,23 @@ public static long getPathSize(FileSystem fs, Path path)
throws IOException {
}
long size = 0;
for (FileStatus status : stati) {
- if (status.isDir()) {
- for (FileStatus st : fs.listStatus(status.getPath())) {
- size += getPathSize(fs, st.getPath());
- }
- } else {
- size += status.getLen();
- }
+ size += getPathSize(fs, status);
}
return size;
}
-
+
+ private static long getPathSize(final FileSystem fs, final FileStatus
status) throws IOException {
Review comment:
Thanks for the feedback @steveloughran. I have it updated locally to use
`listFiles` as you suggest and it is working well, I just need to update the
tests now before commiting.
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Issue Time Tracking
-------------------
Worklog Id: (was: 232852)
Time Spent: 0.5h (was: 20m)
> Avoid unnecessary listStatus calls from getSize computation
> -----------------------------------------------------------
>
> Key: CRUNCH-683
> URL: https://issues.apache.org/jira/browse/CRUNCH-683
> Project: Crunch
> Issue Type: Improvement
> Components: Core
> Affects Versions: 0.14.0
> Reporter: Jon Hemphill
> Assignee: Josh Wills
> Priority: Major
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> The getPathSize computation in SourceTargetHelper currently makes unnecessary
> listStatus calls when recursing over a directory, which can cause performance
> issues when the filesystem is an object store such as S3. The performance can
> be improved with the addition of a private method to use for the getPathSize
> recursion that takes a known FIleStatus object as a parameter.
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