OPENDJ-2640: Online import doesn't delete temporary files after import.

Yannick Lecaillez

26.59.2016 41964f8069081ea39d04736bfbdda55f688f8fbc

OPENDJ-2640:  Online import doesn't delete temporary files after import.

Recursively delete the folder used to store temporary files after the
import/rebuild-index completion.

 opendj-server-legacy/src/main/java/org/opends/server/backends/pluggable/OnDiskMergeImporter.java

@@ -20,7 +20,7 @@
 *
 * CDDL HEADER END
 *
 *      Copyright 2015 ForgeRock AS.
 *      Copyright 2015-2016 ForgeRock AS.
 */
package org.opends.server.backends.pluggable;

@@ -200,10 +200,10 @@
          newThreadFactory(null, SORTER_THREAD_NAME, true));
      final LDIFReaderSource source =
          new LDIFReaderSource(rootContainer, importConfig, PHASE1_IMPORTER_THREAD_NAME, threadCount);
      final File tempDir = prepareTempDir(backendCfg, importConfig.getTmpDirectory());
      try (final Importer dbStorage = rootContainer.getStorage().startImport();
           final BufferPool bufferPool = new BufferPool(nbBuffer, bufferSize))
      {
        final File tempDir = prepareTempDir(backendCfg, importConfig.getTmpDirectory());
        final Collection<EntryContainer> entryContainers = rootContainer.getEntryContainers();
        final AbstractTwoPhaseImportStrategy importStrategy = importConfig.getSkipDNValidation()
            ? new SortAndImportWithoutDNValidation(entryContainers, dbStorage, tempDir, bufferPool, sorter)
@@ -215,6 +215,7 @@
      finally
      {
        sorter.shutdown();
        recursiveDelete(tempDir);
      }
      logger.info(NOTE_IMPORT_PHASE_STATS, importer.getTotalTimeInMillis() / 1000, importer.getPhaseOneTimeInMillis()
          / 1000, importer.getPhaseTwoTimeInMillis() / 1000);
@@ -302,13 +303,13 @@
      final int threadCount = Runtime.getRuntime().availableProcessors();
      final int nbBuffer = 2 * indexesToRebuild.size() * threadCount;
      final int bufferSize = computeBufferSize(nbBuffer, availableMemory);
      final File tempDir = prepareTempDir(backendCfg, tmpDirectory);

      final ExecutorService sorter = Executors.newFixedThreadPool(
          Runtime.getRuntime().availableProcessors(),
          newThreadFactory(null, SORTER_THREAD_NAME, true));

      final OnDiskMergeImporter importer;
      final File tempDir = prepareTempDir(backendCfg, tmpDirectory);
      try (final Importer dbStorage = rootContainer.getStorage().startImport();
           final BufferPool bufferPool = new BufferPool(nbBuffer, bufferSize))
      {
@@ -322,6 +323,7 @@
      finally
      {
        sorter.shutdown();
        recursiveDelete(tempDir);
      }

      final long totalTime = importer.getTotalTimeInMillis();