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From: "Joe Bowser (JIRA)" <jira@apache.org>
To: issues@cordova.apache.org
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Subject: [jira] [Commented] (CB-2787) PhoneGap FileTransfer.Download more
 than 300 files
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    [ https://issues.apache.org/jira/browse/CB-2787?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13629598#comment-13629598 ] 

Joe Bowser commented on CB-2787:
--------------------------------

I don't like how this is being serialized, but I don't think it's your fault.  I'd add a timeout to get around this issue, but I think we're not closing the files when we hit the callback, leading us to have too many files opened.
                
> PhoneGap FileTransfer.Download more than 300 files
> --------------------------------------------------
>
>                 Key: CB-2787
>                 URL: https://issues.apache.org/jira/browse/CB-2787
>             Project: Apache Cordova
>          Issue Type: Bug
>          Components: Android
>    Affects Versions: 2.5.0
>            Reporter: Cho
>            Assignee: Filip Maj
>
> I had tried to download more than 300 files and then it hit error after that. Seems like some IO Connection was not properly closed. I wrote a small code to test it out. 
> Any idea? How to file a report or get a source of phonegap to check the real cause?
> {code}
> var counter = 500;
> function DownloadFile() {
>         if (counter == 0) {
>             DownloadComplete();
>             return;
>         }
>         var ft = new FileTransfer();
>         var downloadUrl = "<source>";
>         var dlPath = "<target>"
>         ft.download(downloadUrl, dlPath, function(entry) {
>             counter--;
>             UpdateProgress();
>             DownloadFile();
>         }, function(error) {
>             DownloadFailed();
>         }, true);
>     }
> {code}
> note: <target> and <source> is alright because it was it failed when the counter goes until 300+.
> {code}
> 03-14 08:35:09.706: E/FileTransfer(24867): {"target":"<target>","source":"<source>","http_status":200,"code":1}
> 03-14 08:35:09.706: E/FileTransfer(24867): java.io.FileNotFoundException: <source>: open failed: EMFILE (Too many open files)
> 03-14 08:35:09.706: E/FileTransfer(24867):     at libcore.io.IoBridge.open(IoBridge.java:416)
> 03-14 08:35:09.706: E/FileTransfer(24867):     at java.io.FileOutputStream.<init>(FileOutputStream.java:88)
> 03-14 08:35:09.706: E/FileTransfer(24867):     at java.io.FileOutputStream.<init>(FileOutputStream.java:73)
> 03-14 08:35:09.706: E/FileTransfer(24867):     at org.apache.cordova.FileTransfer$4.run(FileTransfer.java:685)
> 03-14 08:35:09.706: E/FileTransfer(24867):     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
> 03-14 08:35:09.706: E/FileTransfer(24867):     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
> 03-14 08:35:09.706: E/FileTransfer(24867):     at java.lang.Thread.run(Thread.java:856)
> 03-14 08:35:09.706: E/FileTransfer(24867): Caused by: libcore.io.ErrnoException: open failed: EMFILE (Too many open files)
> 03-14 08:35:09.706: E/FileTransfer(24867):     at libcore.io.Posix.open(Native Method)
> 03-14 08:35:09.706: E/FileTransfer(24867):     at libcore.io.BlockGuardOs.open(BlockGuardOs.java:110)
> 03-14 08:35:09.706: E/FileTransfer(24867):     at libcore.io.IoBridge.open(IoBridge.java:400)
> 03-14 08:35:09.706: E/FileTransfer(24867):     ... 6 more
> {code}

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