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https://issues.apache.org/jira/browse/LUCENE-2688?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12917962#action_12917962
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Shai Erera commented on LUCENE-2688:
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I don't understand why does an Android app need to lock the index at all, and
even if -- can't SimpleFS work?
java.util.management is perfectly legit, and is not an external dependency or
anything. Luckily Android includes java.util.concurrent -- what if it didn't?
Would we attempt to fix Lucene too (IndexReader wouldn't work, for example).
I personally don't mind if we fix it though, to use nanoTime() or wrap with
try-catch and fallback to using nanoTime() there.
It's just a question of what do we want to say about Android support.
> NativeFSLockFactory throws an exception on Android 2.2 platform as
> java.lang.management package is not available on android.
> ----------------------------------------------------------------------------------------------------------------------------
>
> Key: LUCENE-2688
> URL: https://issues.apache.org/jira/browse/LUCENE-2688
> Project: Lucene - Java
> Issue Type: Bug
> Components: Store
> Affects Versions: 3.0, 3.0.1, 3.0.2
> Environment: Android 2.2 Froyo Nexus One
> Reporter: Surinder Pal Singh Bindra
> Fix For: 2.9.4, 3.0.3, 3.1, 4.0
>
>
> NativeFSLockFactory throws an exception on Android 2.2 platform as
> java.lang.management package is not available on android.
> Looks like FSDirectory defaults to NativeFSLockFactory, and this class
> refers to java.lang.management package to generate a unique lock.
> java.lang.management is not available in Android 2.2 and hence a runtime
> exception is raised. The workaround is to use another custom LockFactory or
> SimpleFSLockFactory, but Fixing NativeFSLockFactroy will help.
> Thanks,
> Surinder
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