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Created attachment 143043 [details] Full thread dump I tried to quit IDE, but it hanged. See thread dump in the attachment
A first glance at thread dumps shows that 1) AWT-EventQueue-1 waits for parsing task to finish: ... at java.util.concurrent.CountDownLatch.await(CountDownLatch.java:236) at org.netbeans.modules.parsing.impl.Installer.close(Installer.java:115) ... 2) The thread "Editor Parsing Loop (20131206-14bf4eeb70cd)" performs semantic highlighting; it goes into APT and is waiting to lock <0x00000000c3ad81a0> (a org.netbeans.modules.cnd.apt.impl.support.APTDriverImpl$APTSyncCreator) 3) This lock is held by Code Model Parser 1, which in turn stays in RemoteDirectory.ensureChildSync(RemoteDirectory.java:1243) (i.e. waits for CommonTasksSupport.downloadFile to finish) 4) There are two SFTP threads both trying to download inexistent files from MacOS "SFTP: : Downloading .... /MacOSX10.7.sdk ... 5) One of these SFTP threads are waiting to lock <0x00000000c07d50d0> (a java.lang.Object) in ConnectionManager$ConnectionManagerAccessorImpl.openAndAcquireChannel(ConnectionManager.java:552) while another one holds this lock and waits in JSchChannelsSupport.acquireChannel(JSchChannelsSupport.java:132)
Should be fixed as a side effect of fixing issue 241326 by http://hg.netbeans.org/cnd-main/rev/18e26bd0d110