ArvinDevel commented on a change in pull request #832: Issue 620: Close the
fileChannels for read when they are idle
URL: https://github.com/apache/bookkeeper/pull/832#discussion_r158970434
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File path:
bookkeeper-server/src/test/java/org/apache/bookkeeper/bookie/EntryLogTest.java
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@@ -315,6 +316,104 @@ public void testRecoverFromLedgersMapOnV0EntryLog()
throws Exception {
assertEquals(120, meta.getRemainingSize());
}
+ /**
+ * Test Cache for logid2Channel and concurrentMap for logid2FileChannel
work correctly.
+ * Note that, when an entryLogger is initialized, the entry log id will
increase one.
+ * when the preallocation is enabled, a new entrylogger will cost 2 logId.
+ */
+ @Test
+ public void testCacheInEntryLog() throws Exception {
+ File tmpDir = createTempDir("bkTest", ".dir");
+ File curDir = Bookie.getCurrentDirectory(tmpDir);
+ Bookie.checkDirectoryStructure(curDir);
+
+ int gcWaitTime = 1000;
+ ServerConfiguration conf =
TestBKConfiguration.newServerConfiguration();
+ conf.setGcWaitTime(gcWaitTime);
+ conf.setLedgerDirNames(new String[] {tmpDir.toString()});
+ //since last access, expire after 1s
+ conf.setExpireReadChannelCache(1000);
+ conf.setEntryLogFilePreAllocationEnabled(false);
+ // below one will cost logId 0
+ Bookie bookie = new Bookie(conf);
+ // create some entries
+ int numLogs = 4;
+ int numEntries = 10;
+ long[][] positions = new long[numLogs][];
+ for (int i = 0; i < numLogs; i++) {
+ positions[i] = new long[numEntries];
+ EntryLogger logger = new EntryLogger(conf,
Review comment:
that would be good.
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