下载Eclipse Memory Analyzer在mac上打开的时候出现以下异常：

!SESSION 2017-05-13 15:25:56.717 -----------------------------------------------
eclipse.buildId=unknown
java.version=1.8.0_111
java.vendor=Oracle Corporation
BootLoader constants: OS=macosx, ARCH=x86_64, WS=cocoa, NL=zh_CN
Framework arguments:  -keyring /Users/sailfish/.eclipse_keyring -showlocation
Command-line arguments:  -os macosx -ws cocoa -arch x86_64 -keyring /Users/sailfish/.eclipse_keyring -showlocation

!ENTRY org.eclipse.osgi 4 0 2017-05-13 15:25:58.676
!MESSAGE Application error
!STACK 1
java.lang.IllegalStateException: The platform metadata area could not be written: /private/var/folders/k4/knjt7v5x59l25z_tqmvg094r0000gn/T/AppTranslocation/3CBB3175-DD9A-4A3A-B93F-898BA4445384/d/mat.app/Contents/MacOS/workspace/.metadata.  By default the platform writes its content
under the current working directory when the platform is launched.  Use the -data parameter to
specify a different content area for the platform.
        at org.eclipse.core.internal.runtime.DataArea.assertLocationInitialized(DataArea.java:61)
        at org.eclipse.core.internal.runtime.DataArea.getStateLocation(DataArea.java:129)
        at org.eclipse.core.internal.preferences.InstancePreferences.getBaseLocation(InstancePreferences.java:44)
        at org.eclipse.core.internal.preferences.InstancePreferences.initializeChildren(InstancePreferences.java:199)
        at org.eclipse.core.internal.preferences.InstancePreferences.<init>(InstancePreferences.java:59)
        at org.eclipse.core.internal.preferences.InstancePreferences.internalCreate(InstancePreferences.java:209)
        at org.eclipse.core.internal.preferences.EclipsePreferences.create(EclipsePreferences.java:391)
        at org.eclipse.core.internal.preferences.EclipsePreferences.create(EclipsePreferences.java:379)
        at org.eclipse.core.internal.preferences.PreferencesService.createNode(PreferencesService.java:389)
        at org.eclipse.core.internal.preferences.RootPreferences.getChild(RootPreferences.java:63)
        at org.eclipse.core.internal.preferences.RootPreferences.getNode(RootPreferences.java:101)
        at org.eclipse.core.internal.preferences.RootPreferences.node(RootPreferences.java:90)
        at org.eclipse.core.internal.preferences.AbstractScope.getNode(AbstractScope.java:38)
        at org.eclipse.core.runtime.preferences.InstanceScope.getNode(InstanceScope.java:80)
        at org.eclipse.ui.preferences.ScopedPreferenceStore.getStorePreferences(ScopedPreferenceStore.java:229)
        at org.eclipse.ui.preferences.ScopedPreferenceStore.<init>(ScopedPreferenceStore.java:133)
        at org.eclipse.ui.plugin.AbstractUIPlugin.getPreferenceStore(AbstractUIPlugin.java:288)
        at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:620)
        at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)
        at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:606)
        at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
        at org.eclipse.mat.ui.rcp.Application.start(Application.java:26)
        at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
        at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
        at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
        at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:380)
        at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:669)
        at org.eclipse.equinox.launcher.Main.basicRun(Main.java:608)
        at org.eclipse.equinox.launcher.Main.run(Main.java:1515)

• 原因
  /private/var/folders/k4/knjt7v5x59l25z_tqmvg094r0000gn/T/AppTranslocation/3CBB3175-DD9A-4A3A-B93F-898BA4445384/d/mat.app/Contents/MacOS/workspace/.metadata是只读文件

• 解决方案：

-data
/Users/didi/mat-log

• 注意事项

  • data参数和路径必须在两个不同的行
  • data参数必须放在Laucher之前，否则启动还是不成功