ivankelly 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_r170911624
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File path:
bookkeeper-server/src/test/java/org/apache/bookkeeper/bookie/EntryLogTest.java
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@@ -322,6 +327,99 @@ public void testRecoverFromLedgersMapOnV0EntryLog()
throws Exception {
assertEquals(120, meta.getRemainingSize());
}
+ /**
+ * Test Cache for logid2ReadChannel and FileChannelBackingCache 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;
+ int expireTime = 1000;
+ ServerConfiguration conf =
TestBKConfiguration.newServerConfiguration();
+ conf.setGcWaitTime(gcWaitTime);
+ conf.setLedgerDirNames(new String[] {tmpDir.toString()});
+ //since last access, expire after 1s
+ conf.setReadChannelCacheExpireTimeMs(expireTime);
+ conf.setEntryLogFilePreAllocationEnabled(false);
+ // below one will cost logId 0
+ Bookie bookie = new Bookie(conf);
Review comment:
You don't need to create a full bookie.
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