Tomcat是否在符号链接/ usr / bin / java下使用java？

Question

我有两个linux服务器，运行tomcat 7.0.42，两个java应用程序打包在2个WAR文件中。我在linux上使用JDK7u25，但其中一个仍然有jdk1.4.2的符号链接（我没有管理员权限，所以我无法改变它。）

具有正确符号链接/ usr / bin / java的Linux服务器 - ＆gt; jdk 7，工作正常。应用程序正在运行，没有任何问题。

具有/ usr / bin / java的其他Linux服务器 - ＆gt; jdk1.4.2，但是在tomcat中将JAVA_HOME设置为jdk 7（JAVA_HOME = // jdk_1.7.0.25 /），在部署我的应用程序时会抛出一个错误。我的应用程序需要Forkjoin API（仅在jdk 7中可用）。

我注意到这两个服务器之间的唯一区别是符号链接。

我将工作的tomcat（目录+ apps + JDK）复制到不工作的服务器，并将JAVA_HOME设置为导入的工作JDK，但仍然无法工作......它一直在向我抛出错误消息而无法运行应用

以下是日志，但我认为它不够明确，无法理解我在做什么。

 WARNING: Exception encountered when executing an asynchronous task
com.quartetfs.fwk.QuartetRuntimeException: com.quartetfs.biz.pivot.MergeException: [rcpcn0c-29706] Could not merge commit 2 from BoNYslNonCashCollateralsCube( r9szn0c-50673) in BoNYslNonCashCollateralsDistributedCube
    at com.quartetfs.biz.pivot.distribution.impl.DistributedDimensionsManager$ApplyInitialMessageTask.consume(DistributedDimensionsManager.java:493)
    at com.quartetfs.biz.pivot.distribution.impl.DistributedDimensionsManager$ApplyInitialMessageTask.consume(DistributedDimensionsManager.java:408)
    at jsr166.impl.SingleConsumerQueue.tryConsume(SingleConsumerQueue.java:249)
    at com.quartetfs.biz.pivot.distribution.impl.DistributedDimensionsManager$ApplyInitialMessageTask.compute(DistributedDimensionsManager.java:439)
    at jsr166.cancellable.impl.CancellableRecursiveAction.executeTask(CancellableRecursiveAction.java:28)
    at jsr166.cancellable.impl.CancellableForkJoinTask.exec(CancellableForkJoinTask.java:79)
    at jsr166e.ForkJoinTask.doExec(ForkJoinTask.java:264)
    at jsr166e.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:990)
    at jsr166e.ForkJoinPool.runWorker(ForkJoinPool.java:1631)
    at jsr166e.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:108)
Caused by: com.quartetfs.biz.pivot.MergeException: [rcpcn0c-29706] Could not merge commit 2 from BoNYslNonCashCollateralsCube( r9szn0c-50673) in BoNYslNonCashCollateralsDistributedCube
    at com.quartetfs.biz.pivot.impl.ADistributedActivePivot$DistributedTransactionManager.mergeDimensionsInCube(ADistributedActivePivot.java:1014)
    at com.quartetfs.biz.pivot.impl.ADistributedActivePivot$DistributedTransactionManager.onInitialRemoteCommit(ADistributedActivePivot.java:861)
    at com.quartetfs.biz.pivot.distribution.impl.DistributedDimensionsManager$ApplyInitialMessageTask.consume(DistributedDimensionsManager.java:479)
    ... 9 more
Caused by: java.lang.IllegalArgumentException: The measure CollateralValue.SUM belongs to more than one cube
    at com.quartetfs.biz.pivot.distribution.impl.PolymorphicLocalityIdentifier.validateAndContribute(PolymorphicLocalityIdentifier.java:235)
    at com.quartetfs.biz.pivot.impl.ADistributedActivePivot$MergeDimensionsTask.compute(ADistributedActivePivot.java:770)
    at jsr166.cancellable.impl.CancellableRecursiveAction.executeTask(CancellableRecursiveAction.java:28)
    at jsr166.cancellable.impl.CancellableForkJoinTask.exec(CancellableForkJoinTask.java:79)
    at jsr166e.ForkJoinTask.doExec(ForkJoinTask.java:264)
    at jsr166e.ForkJoinTask.doInvoke(ForkJoinTask.java:360)
    at jsr166e.ForkJoinTask.invoke(ForkJoinTask.java:691)
    at com.quartetfs.biz.pivot.impl.ADistributedActivePivot$DistributedTransactionManager.mergeDimensionsInCube(ADistributedActivePivot.java:1009)
    ... 11 more


Aug 07, 2013 8:18:11 PM com.quartetfs.tech.distribution.messenger.impl.SafeBroadcastingTask compute
INFO: Exception encountered during a broadcasting task. Retrying ...
com.quartetfs.fwk.QuartetRuntimeException: java.util.concurrent.ExecutionException: com.quartetfs.fwk.QuartetRuntimeException: com.quartetfs.biz.pivot.MergeException: [rcpcn0c-29706] Could not merge commit 2 from BoNYslNonCashCollateralsCube( r9szn0c-50673) in BoNYslNonCashCollateralsDistributedCube
    at com.quartetfs.biz.pivot.distribution.impl.RemoteInstanceDistributionManager.onMembersChanged(RemoteInstanceDistributionManager.java:217)
    at com.quartetfs.tech.distribution.messenger.impl.ADistributedMessenger$MembersNotificationAction$1.compute(ADistributedMessenger.java:1046)
    at jsr166e.RecursiveAction.exec(RecursiveAction.java:161)
    at jsr166e.ForkJoinTask.doExec(ForkJoinTask.java:264)
    at jsr166e.ForkJoinTask.doJoin(ForkJoinTask.java:345)
    at jsr166e.ForkJoinTask.invokeAll(ForkJoinTask.java:756)
    at com.quartetfs.tech.distribution.messenger.impl.ADistributedMessenger$MembersNotificationAction.execute(ADistributedMessenger.java:1050)
    at jsr166.impl.DeferredActionQueue$ConsumerProcedure.consume(DeferredActionQueue.java:181)
    at jsr166.impl.DeferredActionQueue$ConsumerProcedure.consume(DeferredActionQueue.java:157)
    at jsr166.impl.SingleConsumerQueue.tryConsume(SingleConsumerQueue.java:249)
    at jsr166.impl.DeferredActionQueue.executeAll(DeferredActionQueue.java:68)
    at jsr166.impl.DeferredActionQueue$DeferredExecutionAction.compute(DeferredActionQueue.java:274)
    at jsr166e.RecursiveAction.exec(RecursiveAction.java:161)
    at jsr166e.ForkJoinTask.doExec(ForkJoinTask.java:264)
    at jsr166e.ForkJoinTask.doInvoke(ForkJoinTask.java:360)
    at jsr166e.ForkJoinTask.invoke(ForkJoinTask.java:691)
    at com.quartetfs.tech.distribution.messenger.impl.SafeBroadcastingTask.compute(SafeBroadcastingTask.java:101)
    at jsr166e.RecursiveTask.exec(RecursiveTask.java:65)
    at jsr166e.ForkJoinTask.doExec(ForkJoinTask.java:264)
    at jsr166e.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:990)
    at jsr166e.ForkJoinPool.runWorker(ForkJoinPool.java:1631)
    at jsr166e.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:108)
Caused by: java.util.concurrent.ExecutionException: com.quartetfs.fwk.QuartetRuntimeException: com.quartetfs.biz.pivot.MergeException: [rcpcn0c-29706] Could not merge commit 2 from BoNYslNonCashCollateralsCube( r9szn0c-50673) in BoNYslNonCashCollateralsDistributedCube
    at com.quartetfs.tech.distribution.messenger.future.impl.ACompositeFuture.getResult(ACompositeFuture.java:155)
    at com.quartetfs.tech.distribution.messenger.future.impl.ACompositeFuture.getOrCancel(ACompositeFuture.java:251)
    at com.quartetfs.tech.distribution.messenger.impl.ADistributedMessenger.sendMessages(ADistributedMessenger.java:793)
    at com.quartetfs.tech.distribution.messenger.impl.ADistributedMessenger.sendMessage(ADistributedMessenger.java:864)
    at com.quartetfs.biz.pivot.distribution.impl.RemoteInstanceDistributionManager.onMembersChanged(RemoteInstanceDistributionManager.java:215)
    ... 21 more
Caused by: com.quartetfs.fwk.QuartetRuntimeException: com.quartetfs.biz.pivot.MergeException: [rcpcn0c-29706] Could not merge commit 2 from BoNYslNonCashCollateralsCube( r9szn0c-50673) in BoNYslNonCashCollateralsDistributedCube
    at com.quartetfs.biz.pivot.distribution.impl.DistributedDimensionsManager$ApplyInitialMessageTask.consume(DistributedDimensionsManager.java:493)
    at com.quartetfs.biz.pivot.distribution.impl.DistributedDimensionsManager$ApplyInitialMessageTask.consume(DistributedDimensionsManager.java:408)
    at jsr166.impl.SingleConsumerQueue.tryConsume(SingleConsumerQueue.java:249)
    at com.quartetfs.biz.pivot.distribution.impl.DistributedDimensionsManager$ApplyInitialMessageTask.compute(DistributedDimensionsManager.java:439)
    at jsr166.cancellable.impl.CancellableRecursiveAction.executeTask(CancellableRecursiveAction.java:28)
    at jsr166.cancellable.impl.CancellableForkJoinTask.exec(CancellableForkJoinTask.java:79)
    ... 4 more
Caused by: com.quartetfs.biz.pivot.MergeException: [rcpcn0c-29706] Could not merge commit 2 from BoNYslNonCashCollateralsCube( r9szn0c-50673) in BoNYslNonCashCollateralsDistributedCube
    at com.quartetfs.biz.pivot.impl.ADistributedActivePivot$DistributedTransactionManager.mergeDimensionsInCube(ADistributedActivePivot.java:1014)
    at com.quartetfs.biz.pivot.impl.ADistributedActivePivot$DistributedTransactionManager.onInitialRemoteCommit(ADistributedActivePivot.java:861)
    at com.quartetfs.biz.pivot.distribution.impl.DistributedDimensionsManager$ApplyInitialMessageTask.consume(DistributedDimensionsManager.java:479)
    ... 9 more
Caused by: java.lang.IllegalArgumentException: The measure CollateralValue.SUM belongs to more than one cube
    at com.quartetfs.biz.pivot.distribution.impl.PolymorphicLocalityIdentifier.validateAndContribute(PolymorphicLocalityIdentifier.java:235)
    at com.quartetfs.biz.pivot.impl.ADistributedActivePivot$MergeDimensionsTask.compute(ADistributedActivePivot.java:770)
    at jsr166.cancellable.impl.CancellableRecursiveAction.executeTask(CancellableRecursiveAction.java:28)
    at jsr166.cancellable.impl.CancellableForkJoinTask.exec(CancellableForkJoinTask.java:79)
    at jsr166e.ForkJoinTask.doExec(ForkJoinTask.java:264)
    at jsr166e.ForkJoinTask.doInvoke(ForkJoinTask.java:360)
    at jsr166e.ForkJoinTask.invoke(ForkJoinTask.java:691)
    at com.quartetfs.biz.pivot.impl.ADistributedActivePivot$DistributedTransactionManager.mergeDimensionsInCube(ADistributedActivePivot.java:1009)
    ... 11 more

和另一个重复的日志错误：

    SEVERE: HelloMessage [HelloMessage-rcpcn0c-47329-62] could not be transmitted
    java.util.concurrent.CancellationException
        at com.quartetfs.tech.distribution.messenger.future.impl.ACompositeFuture.getResult(ACompositeFuture.java:159)
        at com.quartetfs.tech.distribution.messenger.future.impl.ACompositeFuture.getOrCancel(ACompositeFuture.java:251)
        at com.quartetfs.tech.distribution.messenger.impl.ADistributedMessenger.sendMessages(ADistributedMessenger.java:793)
        at com.quartetfs.tech.distribution.messenger.impl.ADistributedMessenger.sendMessage(ADistributedMessenger.java:864)
        at com.quartetfs.tech.distribution.messenger.impl.ADistributedMessenger.broadcast(ADistributedMessenger.java:881)
        at com.quartetfs.tech.distribution.messenger.impl.JGroupsMessenger.ensureMembersCommunication(JGroupsMessenger.java:174)
        at com.quartetfs.tech.distribution.messenger.impl.ADistributedMessenger$MembersNotificationAction.execute(ADistributedMessenger.java:1004)
        at jsr166.impl.DeferredActionQueue$ConsumerProcedure.consume(DeferredActionQueue.java:181)
        at jsr166.impl.DeferredActionQueue$ConsumerProcedure.consume(DeferredActionQueue.java:157)
        at jsr166.impl.SingleConsumerQueue.tryConsume(SingleConsumerQueue.java:249)
        at jsr166.impl.DeferredActionQueue.executeAll(DeferredActionQueue.java:68)
        at jsr166.impl.DeferredActionQueue$DeferredExecutionAction.compute(DeferredActionQueue.java:274)
        at jsr166e.RecursiveAction.exec(RecursiveAction.java:161)
        at jsr166e.ForkJoinTask.doExec(ForkJoinTask.java:264)
        at jsr166e.ForkJoinTask.doInvoke(ForkJoinTask.java:360)
        at jsr166e.ForkJoinTask.invoke(ForkJoinTask.java:691)
        at com.quartetfs.tech.distribution.messenger.impl.SafeBroadcastingTask.compute(SafeBroadcastingTask.java:101)
        at jsr166e.RecursiveTask.exec(RecursiveTask.java:65)
        at jsr166e.ForkJoinTask.doExec(ForkJoinTask.java:264)
        at jsr166e.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:990)
        at jsr166e.ForkJoinPool.runWorker(ForkJoinPool.java:1631)
        at jsr166e.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:108)

    Aug 07, 2013 8:18:29 PM com.quartetfs.tech.distribution.messenger.impl.SafeBroadcastingTask compute
    INFO: Exception encountered during a broadcasting task. Retrying ...
    com.quartetfs.fwk.QuartetRuntimeException: Could not connect to remote instances
        at com.quartetfs.tech.distribution.messenger.impl.JGroupsMessenger.ensureMembersCommunication(JGroupsMessenger.java:188)
        at com.quartetfs.tech.distribution.messenger.impl.ADistributedMessenger$MembersNotificationAction.execute(ADistributedMessenger.java:1004)
        at jsr166.impl.DeferredActionQueue$ConsumerProcedure.consume(DeferredActionQueue.java:181)
        at jsr166.impl.DeferredActionQueue$ConsumerProcedure.consume(DeferredActionQueue.java:157)
        at jsr166.impl.SingleConsumerQueue.tryConsume(SingleConsumerQueue.java:249)
        at jsr166.impl.DeferredActionQueue.executeAll(DeferredActionQueue.java:68)
        at jsr166.impl.DeferredActionQueue$DeferredExecutionAction.compute(DeferredActionQueue.java:274)
        at jsr166e.RecursiveAction.exec(RecursiveAction.java:161)
        at jsr166e.ForkJoinTask.doExec(ForkJoinTask.java:264)
        at jsr166e.ForkJoinTask.doInvoke(ForkJoinTask.java:360)
        at jsr166e.ForkJoinTask.invoke(ForkJoinTask.java:691)
        at com.quartetfs.tech.distribution.messenger.impl.SafeBroadcastingTask.compute(SafeBroadcastingTask.java:101)
        at jsr166e.RecursiveTask.exec(RecursiveTask.java:65)
        at jsr166e.ForkJoinTask.doExec(ForkJoinTask.java:264)
        at jsr166e.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:990)
        at jsr166e.ForkJoinPool.runWorker(ForkJoinPool.java:1631)
        at jsr166e.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:108)
    Caused by: java.util.concurrent.CancellationException
        at com.quartetfs.tech.distribution.messenger.future.impl.ACompositeFuture.getResult(ACompositeFuture.java:159)
        at com.quartetfs.tech.distribution.messenger.future.impl.ACompositeFuture.getOrCancel(ACompositeFuture.java:251)
        at com.quartetfs.tech.distribution.messenger.impl.ADistributedMessenger.sendMessages(ADistributedMessenger.java:793)
        at com.quartetfs.tech.distribution.messenger.impl.ADistributedMessenger.sendMessage(ADistributedMessenger.java:864)
        at com.quartetfs.tech.distribution.messenger.impl.ADistributedMessenger.broadcast(ADistributedMessenger.java:881)
        at com.quartetfs.tech.distribution.messenger.impl.JGroupsMessenger.ensureMembersCommunication(JGroupsMessenger.java:174)
        ... 16 more

如果我将JAVA_HOME设置到正确的位置，它可以来自/ usr / bin / javaeven下的java吗？我找不到tomcat如何真正使用java ...

Answer 1

正如Stephen指出的那样，Tomcat根据服务器配置使用多种不同的方式来确定正在使用的java。

在大多数情况下，我首先检查工作服务器是否存在$ JAVA_HOME，以及自定义$ PATH设置。检查通常的嫌疑人：/ etc / profile，/ etc / profile.d / ，.bash ，。profile，等等。

如果您将JAVA_HOME作为实际服务运行，您甚至可以在用户级别指定JAVA_HOME，也可以在init脚本中指定服务级别。

此时，您的问题中有许多未解答的变量：

1。）您是否在两个位置以同一用户身份运行该流程？ 2.）用户是否在两个位置配置相同，具有相同的PATH优先级和ENV变量？ 3.）init脚本是否相同？

通过尽可能详细地提供我们，我们可以提供更完整/彻底的回复。

Answer 2

  

Tomcat是否在符号链接/ usr / bin / java下使用java？

这完全取决于您如何配置Tomcat以及如何启动它。

但好消息是所有这些都发生在shell脚本中，您可以轻松阅读......如果有必要，“黑客”找出正在使用的java命令。从启动命令或init.d脚本或其他任何内容开始，并跟踪它。

另外，请记住，很多这些东西都依赖于您正在使用的Linux发行版，以及它们如何组合Tomcat“包”。