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<p class=MsoNormal style='mso-margin-top-alt:3.75pt;margin-right:0in;
margin-bottom:3.75pt;margin-left:0in;line-height:13.0pt'><span
style='color:#1F497D'>What is the value of jcifs.resolveOrder ? We use DFS in-house
and I have found that “LMHOSTS, WINS, BCAST, DNS” works for our setup. </span><b><span
style='font-size:10.0pt;font-family:"Times New Roman","serif";color:#003366'><o:p></o:p></span></b></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>~sameer<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
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<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> jcifs-bounces@lists.samba.org
[mailto:jcifs-bounces@lists.samba.org] <b>On Behalf Of </b>Peter Kossek<br>
<b>Sent:</b> Thursday, June 03, 2010 2:01 AM<br>
<b>To:</b> jcifs@lists.samba.org<br>
<b>Subject:</b> [jcifs] Hundreds of threads while listing directory<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Hello,<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I just started using jCIFS a couple of days before, but now
I'm experiencing some problems. My application throws an OOME while trying to
list the content of a directory.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>The exception message:<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>Exception in thread
"AWT-EventQueue-0" java.lang.OutOfMemoryError: unable to create new
native thread<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
at java.lang.Thread.start0(Native Method)<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
at java.lang.Thread.start(Thread.java:597)<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
at jcifs.UniAddress.lookupServerOrWorkgroup(UniAddress.java:173)<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
at jcifs.UniAddress.getAllByName(UniAddress.java:290)<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
at jcifs.UniAddress.getByName(UniAddress.java:245)<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
at jcifs.smb.Dfs.getTrustedDomains(Dfs.java:62)<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
at jcifs.smb.Dfs.resolve(Dfs.java:167)<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
at jcifs.smb.SmbFile.resolveDfs(SmbFile.java:666)<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
at jcifs.smb.SmbFile.send(SmbFile.java:768)<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
at jcifs.smb.SmbFile.doFindFirstNext(SmbFile.java:2023)<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
at jcifs.smb.SmbFile.doEnum(SmbFile.java:1731)<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
at jcifs.smb.SmbFile.listFiles(SmbFile.java:1708)<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
at jcifs.smb.SmbFile.listFiles(SmbFile.java:1641)<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
at as_file.as_smb_lister.findFile(as_smb_lister.java:140)<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
...<o:p></o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>The code for finding the file:<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>public static
SmbFile[] findFile(SmbFile startFolder, String filename) {<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
ArrayList<SmbFile> files = new ArrayList<SmbFile>();<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
ArrayList<SmbFile> foldersToWalk = new ArrayList<SmbFile>();<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
try {<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
if (startFolder.isDirectory()) {<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
foldersToWalk.add(startFolder);<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
}<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
while (foldersToWalk.size() > 0) {<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
SmbFile lookInto = foldersToWalk.remove(0);<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
System.out.println("walking " + lookInto.getPath());<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
try {<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
SmbFile[] found = lookInto.listFiles(); // line 140<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
for (int i = 0; i < found.length; i++) {<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
if (found[i].getName().endsWith("/")) {<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
foldersToWalk.add(found[i]);<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
} else {<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
if (found[i].getName().equals(filename)) {<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
files.add(found[i]);<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
}<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
}<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
}<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
} catch (SmbException ex) {<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
System.out.println(ex.getMessage());<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
}<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
}<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
} catch (SmbException ex) {<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
System.out.println(ex.getMessage());<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
}<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
SmbFile[] result = new SmbFile[files.size()];<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
for (int i = 0; i < files.size(); i++) {<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
result[i] = files.get(i);<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
}<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
SmbFile[] found = new SmbFile[files.size()];<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
for (int i = 0; i < files.size(); i++) {<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
found[i] = files.get(i);<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
}<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'>
return found;<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Courier New"'> }<o:p></o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>The directory it's trying to list is smb://KOSSEK/C$/Windows/winsxs/Backup/
which is known to contain lots of files, 3256 files in this case.<o:p></o:p></p>
<p class=MsoNormal>I noticed that there is a peak of numbers of threads, up to
more than 2000 threads (QueryThreads) at once that seem to bring the VM to its
limits. Maybe I made a mistake in my code that forces this massive creation of
threads, but I just can't find it. What can I do to fix this?<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Thanks in advance for your help.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span lang=DE>Best regards - Peter<o:p></o:p></span></p>
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