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Subject [GitHub] [zookeeper] anmolnar commented on a change in pull request #1034: ZOOKEEPER-3491 Specify commitLogCount value using a system property
Date Tue, 10 Sep 2019 11:11:41 GMT
anmolnar commented on a change in pull request #1034: ZOOKEEPER-3491 Specify commitLogCount
value using a system property
URL: https://github.com/apache/zookeeper/pull/1034#discussion_r322682677
 
 

 ##########
 File path: zookeeper-server/src/main/java/org/apache/zookeeper/server/ZKDatabase.java
 ##########
 @@ -120,6 +124,23 @@ public ZKDatabase(FileTxnSnapLog snapLog) {
             snapshotSizeFactor = DEFAULT_SNAPSHOT_SIZE_FACTOR;
         }
         LOG.info("{} = {}", SNAPSHOT_SIZE_FACTOR, snapshotSizeFactor);
+
+        try {
+            commitLogCount = Integer.parseInt(
+                    System.getProperty(COMMIT_LOG_COUNT,
+                            Integer.toString(DEFAULT_COMMIT_LOG_COUNT)));
+            if (commitLogCount < DEFAULT_COMMIT_LOG_COUNT) {
+                commitLogCount = DEFAULT_COMMIT_LOG_COUNT;
+                LOG.warn("The configured commitLogCount {} is less than the recommended {}"
 
 Review comment:
   @vladimirivic I think this would have been added to the documentation. The default value
of 500 is not just a default value, but the minimum and the recommended one. What's the risk
of setting this to less than 500 btw?

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