java.io.IOException：无效的参数和太多打开的文件

Question

我使用下载种子的库。 但今天发生了一些错误（日志）：

Could not create temp files
java.io.IOException: Invalid argument
    at java.io.RandomAccessFile.setLength(Native Method)
    at jBittorrentAPI.DownloadManager.checkTempFiles(DownloadManager.java:261)
    at jBittorrentAPI.DownloadManager.(DownloadManager.java:108)
    at torrentstealer.DownloadTorrent.run(DownloadTorrent.java:65)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
    at java.util.concurrent.FutureTask.run(FutureTask.java:138)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
    at java.lang.Thread.run(Thread.java:662)
Could not create temp files
java.io.IOException: Invalid argument
    at java.io.RandomAccessFile.setLength(Native Method)
    at jBittorrentAPI.DownloadManager.checkTempFiles(DownloadManager.java:261)
    at jBittorrentAPI.DownloadManager.(DownloadManager.java:108)
    at torrentstealer.DownloadTorrent.run(DownloadTorrent.java:65)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
    at java.util.concurrent.FutureTask.run(FutureTask.java:138)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
    at java.lang.Thread.run(Thread.java:662)
Could not create temp files
java.io.IOException: Invalid argument
    at java.io.RandomAccessFile.setLength(Native Method)
    at jBittorrentAPI.DownloadManager.checkTempFiles(DownloadManager.java:261)
    at jBittorrentAPI.DownloadManager.(DownloadManager.java:108)
    at torrentstealer.DownloadTorrent.run(DownloadTorrent.java:65)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
    at java.util.concurrent.FutureTask.run(FutureTask.java:138)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
    at java.lang.Thread.run(Thread.java:662)
Could not create temp files
java.io.IOException: Invalid argument
    at java.io.RandomAccessFile.setLength(Native Method)
    at jBittorrentAPI.DownloadManager.checkTempFiles(DownloadManager.java:261)
    at jBittorrentAPI.DownloadManager.(DownloadManager.java:108)
    at torrentstealer.DownloadTorrent.run(DownloadTorrent.java:65)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
    at java.util.concurrent.FutureTask.run(FutureTask.java:138)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
    at java.lang.Thread.run(Thread.java:662)
Could not create temp files
java.io.FileNotFoundException: /root/TorrentStealer/downloads/MAME - Update ROMs (v0.141 to v0.141u2)/lah_l104.zip (Too many open files)
    at java.io.RandomAccessFile.open(Native Method)
    at java.io.RandomAccessFile.(RandomAccessFile.java:212)
    at jBittorrentAPI.DownloadManager.checkTempFiles(DownloadManager.java:260)
    at jBittorrentAPI.DownloadManager.(DownloadManager.java:108)
    at torrentstealer.DownloadTorrent.run(DownloadTorrent.java:65)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
    at java.util.concurrent.FutureTask.run(FutureTask.java:138)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
    at java.lang.Thread.run(Thread.java:662)
Could not create temp files
java.io.FileNotFoundException: /root/TorrentStealer/downloads/Degrassi.Junior.High.S01-S03.INTERNAL.DVDRip.XviD-FFNDVD/Degrassi.Junior.High.S01.INTERNAL.DVDRip.XviD-FFNDVDDegrassi.Junior.High.S01E10.INTERNAL.DVDRip.XviD-FFNDVDdegrassi.junior.high.s01e10.internal.dvdrip.xvid-ffndvd.r10 (Too many open files)
    at java.io.RandomAccessFile.open(Native Method)
    at java.io.RandomAccessFile.(RandomAccessFile.java:212)
    at jBittorrentAPI.DownloadManager.checkTempFiles(DownloadManager.java:260)
    at jBittorrentAPI.DownloadManager.(DownloadManager.java:108)
    at torrentstealer.DownloadTorrent.run(DownloadTorrent.java:65)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
    at java.util.concurrent.FutureTask.run(FutureTask.java:138)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
    at java.lang.Thread.run(Thread.java:662)
Could not create temp files
java.io.FileNotFoundException: /root/TorrentStealer/downloads/MAME - Update ROMs (v0.141 to v0.141u2)/lah_l108.zip (Too many open files)
    at java.io.RandomAccessFile.open(Native Method)
    at java.io.RandomAccessFile.(RandomAccessFile.java:212)
    at jBittorrentAPI.DownloadManager.checkTempFiles(DownloadManager.java:260)
    at jBittorrentAPI.DownloadManager.(DownloadManager.java:108)
    at torrentstealer.DownloadTorrent.run(DownloadTorrent.java:65)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
    at java.util.concurrent.FutureTask.run(FutureTask.java:138)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
    at java.lang.Thread.run(Thread.java:662)

等等，日志继续。 我发现这个文件存在，这里是发生错误的代码的一部分：

  /** * Check the existence of the files specified in the torrent and if necessary, * create them * * @return int * @todo Should return an integer representing some error message... */ public synchronized int checkTempFiles() { String saveas = Constants.SAVEPATH; // Should be configurable if (this.nbOfFiles > 1) saveas += this.torrent.saveAs + "/"; else { this.torrent.saveAs = this.torrent.name.get(0).toString(); } new File(saveas).mkdirs(); for (int i = 0; i < this.nbOfFiles; i++) { File temp = new File(saveas + ((String) (this.torrent.name.get(i)))); try { this.output_files[i] = new RandomAccessFile(temp, "rw"); this.output_files[i].setLength((Integer)this.torrent.length.get( i)); } catch (IOException ioe) { System.err.println("Could not create temp files"); ioe.printStackTrace(); } } return 0; } 

在这里打电话：

  // запуск закачки dm.startListening(49152, 65535); dm.startTrackerUpdate(); 
 
\n\n
  while(true) { if(dm.isComplete()) { break; } try { Thread.sleep(100); } catch(InterruptedException ex) { Logger.getLogger(DownloadTorrent.class.getName()).log(Level.SEVERE, null, ex); } } dm.stopTrackerUpdate(); dm.closeTempFiles();</code></pre> 
\n\n
  在这里调用上层代码：ex = Executors.newFixedThreadPool（3）; 
\n\n     for（String torrentFile：torrentFiles）\n     {\n         ex.submit（new DownloadTorrent（“/ root / TorrentStealer / torrents /”+ torrentFile））;\n     }\n\n     //ожиданиезавершенияпотоковзагрузкифайловторрентов\n     ex.shutdown（）;\n\n     尝试\n     {\n         ex.awaitTermination（30，TimeUnit.MINUTES）;\n     }\n     catch（InterruptedException ex1）\n     {\n         Logger.getLogger（Main.class.getName（））。log（Level.SEVERE，null，ex1）;\n     }\n\n     ex.shutdownNow（）; </代码> </ PRE>\n

这里是修复«打开太多文件»的说明： http ： //wiki.magnolia-cms.com/display/WIKI/Too+Many+Open+Files

我设置了999999个最大文件，修复了一段时间的错误，然后设置了9999999进行测试，并没有真正起作用，所有时间错误都发生了。 重新启动服务器后，在运行后的一刻不能打开9999999个文件！

所以男人我不知道该怎么办。 你能帮助我吗？

这是异常发生时打开文件的计数：T217：〜＃lsof | wc -l结果是：2708

Answer 1

堆栈跟踪在java.io.RandomAccessFile.setLength（）中指示错误，该错误接受long数据类型。 在您的代码中，您将this.torrent.length.get(i)的结果this.torrent.length.get(i)为Integer。

does this.torrent.length.get(i)返回什么？

将数据从返回转换为Integer时，可能会出现一些缩小的问题，可能会返回负数，导致RandomAccessFile.setLength()错误输出。

Answer 2

java.io.IOException: Invalid argument
    at java.io.RandomAccessFile.setLength(Native Method)

你正在传递负值。 将值转换为long而不是Integer。

java.io.FileNotFoundException: /root/TorrentStealer/downloads/MAME - Update ROMs (v0.141 to v0.141u2)/lah_l104.zip (Too many open files)

您没有关闭文件。 您打开的每个需要关闭的资源必须在finally块中关闭，以确保无法逃脱。