Question

我有一个基于sbt的项目。通用包装插件已启用

mappings in Universal ++= directory("public")

和其他目录映射如下：

    Could not create file [...omitted...]/target/streams/compile/$global/$global/discoveredMainClasses/datajava.io.IOException: Too many open files in system
            at sbt.ErrorHandling$.translate(ErrorHandling.scala:10)
            at sbt.IO$.touch(IO.scala:196)
            at sbt.std.Streams$$anon$3$$anon$2.make(Streams.scala:129)
            at sbt.std.Streams$$anon$3$$anon$2.binary(Streams.scala:116)
            at sbt.SessionVar$$anonfun$persist$1.apply(SessionVar.scala:27)
            at sbt.SessionVar$$anonfun$persist$1.apply(SessionVar.scala:26)
            at sbt.std.Streams$class.use(Streams.scala:75)
            at sbt.std.Streams$$anon$3.use(Streams.scala:100)
            at sbt.SessionVar$.persist(SessionVar.scala:26)
            at sbt.SessionVar$.persistAndSet(SessionVar.scala:21)
            at sbt.Project$RichTaskSessionVar$$anonfun$storeAs$1$$anonfun$apply$5.apply(Project.scala:563)
            at sbt.Project$RichTaskSessionVar$$anonfun$storeAs$1$$anonfun$apply$5.apply(Project.scala:563)
            at sbt.SessionVar$$anonfun$1$$anonfun$apply$1.apply(SessionVar.scala:40)
            at sbt.SessionVar$$anonfun$1$$anonfun$apply$1.apply(SessionVar.scala:40)
            at scala.Function$$anonfun$chain$1$$anonfun$apply$1.apply(Function.scala:24)
            at scala.Function$$anonfun$chain$1$$anonfun$apply$1.apply(Function.scala:24)
            at scala.collection.IndexedSeqOptimized$class.foldl(IndexedSeqOptimized.scala:51)
            at scala.collection.IndexedSeqOptimized$class.foldLeft(IndexedSeqOptimized.scala:60)
            at scala.collection.mutable.ArrayBuffer.foldLeft(ArrayBuffer.scala:47)
            at scala.collection.TraversableOnce$class.$div$colon(TraversableOnce.scala:138)
            at scala.collection.AbstractTraversable.$div$colon(Traversable.scala:105)
            at scala.Function$$anonfun$chain$1.apply(Function.scala:24)
            at sbt.EvaluateTask$.applyResults(EvaluateTask.scala:387)
            at sbt.EvaluateTask$.liftedTree1$1(EvaluateTask.scala:361)
            at sbt.EvaluateTask$.run$1(EvaluateTask.scala:358)
            at sbt.EvaluateTask$.runTask(EvaluateTask.scala:378)
            at sbt.Aggregation$$anonfun$3.apply(Aggregation.scala:64)
            at sbt.Aggregation$$anonfun$3.apply(Aggregation.scala:62)
            at sbt.EvaluateTask$.withStreams(EvaluateTask.scala:314)
            at sbt.Aggregation$.timedRun(Aggregation.scala:62)
            at sbt.Aggregation$.runTasks(Aggregation.scala:71)
            at sbt.Aggregation$$anonfun$applyTasks$1.apply(Aggregation.scala:32)
            at sbt.Aggregation$$anonfun$applyTasks$1.apply(Aggregation.scala:31)
            at sbt.Command$$anonfun$applyEffect$2$$anonfun$apply$3.apply(Command.scala:61)
            at sbt.Command$$anonfun$applyEffect$2$$anonfun$apply$3.apply(Command.scala:61)
            at sbt.Aggregation$$anonfun$evaluatingParser$4$$anonfun$apply$5.apply(Aggregation.scala:153)
            at sbt.Aggregation$$anonfun$evaluatingParser$4$$anonfun$apply$5.apply(Aggregation.scala:152)
            at sbt.Act$$anonfun$sbt$Act$$actParser0$1$$anonfun$sbt$Act$$anonfun$$evaluate$1$1$$anonfun$apply$10.apply(Act.scala:244)
            at sbt.Act$$anonfun$sbt$Act$$actParser0$1$$anonfun$sbt$Act$$anonfun$$evaluate$1$1$$anonfun$apply$10.apply(Act.scala:241)
            at sbt.Command$.process(Command.scala:93)
            at sbt.MainLoop$$anonfun$1$$anonfun$apply$1.apply(MainLoop.scala:96)
            at sbt.MainLoop$$anonfun$1$$anonfun$apply$1.apply(MainLoop.scala:96)
            at sbt.State$$anon$1.process(State.scala:184)
            at sbt.MainLoop$$anonfun$1.apply(MainLoop.scala:96)
            at sbt.MainLoop$$anonfun$1.apply(MainLoop.scala:96)
            at sbt.ErrorHandling$.wideConvert(ErrorHandling.scala:17)
            at sbt.MainLoop$.next(MainLoop.scala:96)
            at sbt.MainLoop$.run(MainLoop.scala:89)
            at sbt.MainLoop$$anonfun$runWithNewLog$1.apply(MainLoop.scala:68)
            at sbt.MainLoop$$anonfun$runWithNewLog$1.apply(MainLoop.scala:63)
            at sbt.Using.apply(Using.scala:24)
            at sbt.MainLoop$.runWithNewLog(MainLoop.scala:63)
            at sbt.MainLoop$.runAndClearLast(MainLoop.scala:46)
            at sbt.MainLoop$.runLoggedLoop(MainLoop.scala:30)
            at sbt.MainLoop$.runLogged(MainLoop.scala:22)
            at sbt.StandardMain$.runManaged(Main.scala:54)
            at sbt.xMain.run(Main.scala:29)
            at xsbt.boot.Launch$$anonfun$run$1.apply(Launch.scala:109)
            at xsbt.boot.Launch$.withContextLoader(Launch.scala:128)
            at xsbt.boot.Launch$.run(Launch.scala:109)
            at xsbt.boot.Launch$$anonfun$apply$1.apply(Launch.scala:35)
            at xsbt.boot.Launch$.launch(Launch.scala:117)
            at xsbt.boot.Launch$.apply(Launch.scala:18)
            at xsbt.boot.Boot$.runImpl(Boot.scala:41)
            at xsbt.boot.Boot$.main(Boot.scala:17)
            at xsbt.boot.Boot.main(Boot.scala)
    Caused by: java.io.IOException: Too many open files in system
            at java.io.UnixFileSystem.createFileExclusively(Native Method)
            at java.io.File.createNewFile(File.java:1012)
            at sbt.IO$$anonfun$1.apply$mcZ$sp(IO.scala:196)
            at sbt.IO$$anonfun$1.apply(IO.scala:196)
            at sbt.IO$$anonfun$1.apply(IO.scala:196)
            at sbt.ErrorHandling$.translate(ErrorHandling.scala:10)
            at sbt.IO$.touch(IO.scala:196)
            at sbt.std.Streams$$anon$3$$anon$2.make(Streams.scala:129)
            at sbt.std.Streams$$anon$3$$anon$2.binary(Streams.scala:116)
            at sbt.SessionVar$$anonfun$persist$1.apply(SessionVar.scala:27)
            at sbt.SessionVar$$anonfun$persist$1.apply(SessionVar.scala:26)
            at sbt.std.Streams$class.use(Streams.scala:75)
            at sbt.std.Streams$$anon$3.use(Streams.scala:100)
            at sbt.SessionVar$.persist(SessionVar.scala:26)
            at sbt.SessionVar$.persistAndSet(SessionVar.scala:21)
            at sbt.Project$RichTaskSessionVar$$anonfun$storeAs$1$$anonfun$apply$5.apply(Project.scala:563)
            at sbt.Project$RichTaskSessionVar$$anonfun$storeAs$1$$anonfun$apply$5.apply(Project.scala:563)
            at sbt.SessionVar$$anonfun$1$$anonfun$apply$1.apply(SessionVar.scala:40)
            at sbt.SessionVar$$anonfun$1$$anonfun$apply$1.apply(SessionVar.scala:40)
            at scala.Function$$anonfun$chain$1$$anonfun$apply$1.apply(Function.scala:24)
            at scala.Function$$anonfun$chain$1$$anonfun$apply$1.apply(Function.scala:24)
            at scala.collection.IndexedSeqOptimized$class.foldl(IndexedSeqOptimized.scala:51)
            at scala.collection.IndexedSeqOptimized$class.foldLeft(IndexedSeqOptimized.scala:60)
            at scala.collection.mutable.ArrayBuffer.foldLeft(ArrayBuffer.scala:47)
            at scala.collection.TraversableOnce$class.$div$colon(TraversableOnce.scala:138)
            at scala.collection.AbstractTraversable.$div$colon(Traversable.scala:105)
            at scala.Function$$anonfun$chain$1.apply(Function.scala:24)
            at sbt.EvaluateTask$.applyResults(EvaluateTask.scala:387)
            at sbt.EvaluateTask$.liftedTree1$1(EvaluateTask.scala:361)
            at sbt.EvaluateTask$.run$1(EvaluateTask.scala:358)
            at sbt.EvaluateTask$.runTask(EvaluateTask.scala:378)
            at sbt.Aggregation$$anonfun$3.apply(Aggregation.scala:64)
            at sbt.Aggregation$$anonfun$3.apply(Aggregation.scala:62)
            at sbt.EvaluateTask$.withStreams(EvaluateTask.scala:314)
            at sbt.Aggregation$.timedRun(Aggregation.scala:62)
            at sbt.Aggregation$.runTasks(Aggregation.scala:71)
            at sbt.Aggregation$$anonfun$applyTasks$1.apply(Aggregation.scala:32)
            at sbt.Aggregation$$anonfun$applyTasks$1.apply(Aggregation.scala:31)
            at sbt.Command$$anonfun$applyEffect$2$$anonfun$apply$3.apply(Command.scala:61)
            at sbt.Command$$anonfun$applyEffect$2$$anonfun$apply$3.apply(Command.scala:61)
            at sbt.Aggregation$$anonfun$evaluatingParser$4$$anonfun$apply$5.apply(Aggregation.scala:153)
            at sbt.Aggregation$$anonfun$evaluatingParser$4$$anonfun$apply$5.apply(Aggregation.scala:152)
            at sbt.Act$$anonfun$sbt$Act$$actParser0$1$$anonfun$sbt$Act$$anonfun$$evaluate$1$1$$anonfun$apply$10.apply(Act.scala:244)
            at sbt.Act$$anonfun$sbt$Act$$actParser0$1$$anonfun$sbt$Act$$anonfun$$evaluate$1$1$$anonfun$apply$10.apply(Act.scala:241)
            at sbt.Command$.process(Command.scala:93)
            at sbt.MainLoop$$anonfun$1$$anonfun$apply$1.apply(MainLoop.scala:96)
            at sbt.MainLoop$$anonfun$1$$anonfun$apply$1.apply(MainLoop.scala:96)
            at sbt.State$$anon$1.process(State.scala:184)
            at sbt.MainLoop$$anonfun$1.apply(MainLoop.scala:96)
            at sbt.MainLoop$$anonfun$1.apply(MainLoop.scala:96)
            at sbt.ErrorHandling$.wideConvert(ErrorHandling.scala:17)
            at sbt.MainLoop$.next(MainLoop.scala:96)
            at sbt.MainLoop$.run(MainLoop.scala:89)
            at sbt.MainLoop$$anonfun$runWithNewLog$1.apply(MainLoop.scala:68)
            at sbt.MainLoop$$anonfun$runWithNewLog$1.apply(MainLoop.scala:63)
            at sbt.Using.apply(Using.scala:24)
            at sbt.MainLoop$.runWithNewLog(MainLoop.scala:63)
            at sbt.MainLoop$.runAndClearLast(MainLoop.scala:46)
            at sbt.MainLoop$.runLoggedLoop(MainLoop.scala:30)
            at sbt.MainLoop$.runLogged(MainLoop.scala:22)
            at sbt.StandardMain$.runManaged(Main.scala:54)
            at sbt.xMain.run(Main.scala:29)
            at xsbt.boot.Launch$$anonfun$run$1.apply(Launch.scala:109)
            at xsbt.boot.Launch$.withContextLoader(Launch.scala:128)
            at xsbt.boot.Launch$.run(Launch.scala:109)
            at xsbt.boot.Launch$$anonfun$apply$1.apply(Launch.scala:35)
            at xsbt.boot.Launch$.launch(Launch.scala:117)
            at xsbt.boot.Launch$.apply(Launch.scala:18)
            at xsbt.boot.Boot$.runImpl(Boot.scala:41)
            at xsbt.boot.Boot$.main(Boot.scala:17)
            at xsbt.boot.Boot.main(Boot.scala)
    [error] Could not create file [...omitted...]/target/streams/compile/$global/$global/discoveredMainClasses/datajava.io.IOException: Too man
    y open files in system
    [error] Use 'last' for the full log.

我尝试在多台计算机（运行OS X和Linux）上使用 dist 命令构建程序包，但它总是失败，并带有以下跟踪：

-XX:-MaxFDLimit

将RENAME TABLE table 2 to ProjectBlue; ALTER TABLE table 2 RENAME ProjectBlue; RENAME TABLE [table 2] to ProjectBlue;选项传递给JVM没有任何区别。

sbt的版本是0.13.9，sbt-native-packager是1.1.1（最新的，也使用了v1.0.6）。

所以这是一个错误，或者我只需要该目录中的许多文件？

Answer 1

据我所知，你对底层操作系统有一些问题：

Caused by: java.io.IOException: Too many open files in system
        at java.io.UnixFileSystem.createFileExclusively(Native Method)

尝试在Linux中调整max允许的打开文件设置。例如here是一些命令：

如果您收到错误   “太多打开的文件（24）”然后你的应用程序/命令/脚本是   达到linux允许的最大开放文件限制。你需要增加   打开文件限制如下：
增加限制每用户限制
打开   文件：/etc/security/limits.conf

粘贴   跟随结束：
*

hard    nofile      500000
*         soft    nofile      500000 root      hard    nofile      500000 root      soft    nofile      500000
500000是   公平的数字。我不确定什么是最大限制，但999999（Six-9）工作   对我来说，就我记忆而言。

保存档案后，你可以   需要注销并再次登录。
pam-limits
我在很多地方读过   为守护进程的更改限制需要额外的步骤。   我还不需要关注，但如果上述更改不起作用   你，你可以尝试一下。

打开/etc/pam.d/common-session

添加   以下行：
session required
pam_limits.so
系统范围限制
将此值设置得更高   比上面设置的用户限制。

打开/etc/sysctl.conf

添加   以下：
fs.file-max =
2097152
运行：
sysctl -p
以上会增加可以在系统范围内保持开放的“总”文件数。
验证新限制

使用以下命令查看文件描述符的最大限制：
cat /proc/sys/fs/file-max
硬限制
ulimit
-Hn
软限制
ulimit -Sn
如果您已登录以root用户身份：
检查其他用户的限制
Just 用你要检查的linux用户名替换www-data 限制：
su - www-data -c
'ulimit -aHS' -s '/bin/bash'
检查正在运行的进程的限制：
查找进程ID（PID）：
ps aux |
grep process-name
假设，XXX是PID，然后运行以下命令检查限制：
cat /proc/XXX/limits

sbt-native-packager失败，＆＃34;系统中打开的文件太多＆＃34;映射目录时

1 个答案: