sijie commented on a change in pull request #1125: Issue #1124: Lower memory
usage in GarbageCollectionThread while extracting all ledger meta data
URL: https://github.com/apache/bookkeeper/pull/1125#discussion_r167884231
##
File path:
bookkeeper-server/src/test/java/org/apache/bookkeeper/bookie/CompactionTest.java
##
@@ -835,6 +837,69 @@ public void checkpointComplete(Checkpoint checkpoint,
storage.gcThread.doCompactEntryLogs(threshold);
}
+/**
+ * Test extractMetaFromEntryLogs optimized method to avoid excess memory
usage.
+ */
+@Test(timeout = 6)
+public void testExtractMetaFromEntryLogs() throws Exception {
+ServerConfiguration conf =
TestBKConfiguration.newServerConfiguration();
+File tmpDir = createTempDir("bkTest", ".dir");
+File curDir = Bookie.getCurrentDirectory(tmpDir);
+Bookie.checkDirectoryStructure(curDir);
+conf.setLedgerDirNames(new String[] { tmpDir.toString() });
+
+LedgerDirsManager dirs = new LedgerDirsManager(conf,
conf.getLedgerDirs(),
+new DiskChecker(conf.getDiskUsageThreshold(),
conf.getDiskUsageWarnThreshold()));
+final Set ledgers = Collections
+.newSetFromMap(new ConcurrentHashMap());
+
+LedgerManager manager = getLedgerManager(ledgers);
+
+CheckpointSource checkpointSource = new CheckpointSource() {
+
+@Override
+public Checkpoint newCheckpoint() {
+return null;
+}
+
+@Override
+public void checkpointComplete(Checkpoint checkpoint,
+ boolean compact) throws IOException
{
+}
+};
+InterleavedLedgerStorage storage = new InterleavedLedgerStorage();
+storage.initialize(conf, manager, dirs, dirs, null, checkpointSource,
Checkpointer.NULL, NullStatsLogger.INSTANCE);
+final byte[] KEY = "foobar".getBytes();
+
+for (long ledger = 0; ledger <= 10; ledger++) {
+ledgers.add(ledger);
+for(int entry = 1; entry <= 50; entry++) {
+try {
+storage.addEntry(genEntry(ledger, entry, ENTRY_SIZE));
+} catch (IOException e) {
+//ignore exception on failure to add entry.
+}
+}
+}
+
+storage.flush();
+storage.shutdown();
+
+storage = new InterleavedLedgerStorage();
Review comment:
@eolivelli the test logic here is more on EntryLogger not ledger storage. We
don't need to run same test for two different ledger storage.
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