/** @param workTokDir Token directory (common for multiple nodes). */ private void cleanupResources(File workTokDir) { RandomAccessFile lockFile = null; FileLock lock = null; try { lockFile = new RandomAccessFile(new File(workTokDir, LOCK_FILE_NAME), "rw"); lock = lockFile.getChannel().lock(); if (lock != null) processTokenDirectory(workTokDir); else if (log.isDebugEnabled()) log.debug( "Token directory is being processed concurrently: " + workTokDir.getAbsolutePath()); } catch (OverlappingFileLockException ignored) { if (log.isDebugEnabled()) log.debug( "Token directory is being processed concurrently: " + workTokDir.getAbsolutePath()); } catch (FileLockInterruptionException ignored) { Thread.currentThread().interrupt(); } catch (IOException e) { U.error(log, "Failed to process directory: " + workTokDir.getAbsolutePath(), e); } finally { U.releaseQuiet(lock); U.closeQuiet(lockFile); } }