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https://issues.apache.org/jira/browse/ZOOKEEPER-2933?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16245549#comment-16245549
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ASF GitHub Bot commented on ZOOKEEPER-2933:
-------------------------------------------
Github user anmolnar commented on a diff in the pull request:
https://github.com/apache/zookeeper/pull/415#discussion_r149946468
--- Diff: src/java/main/org/apache/zookeeper/server/quorum/LeaderStats.java
---
@@ -0,0 +1,61 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.zookeeper.server.quorum;
+
+/**
+ * Provides live statistics about a running Leader.
+ */
+class LeaderStats {
+ /**
+ * Size of the last generated proposal. This should fit into server's
jute.maxbuffer setting.
+ */
+ private int lastProposalSize = 0;
+
+ /**
+ * Size of the smallest proposal which has been generated since the
server was started.
+ */
+ private int minProposalSize = -1;
+
+ /**
+ * Size of the largest proposal which has been generated since the
server was started.
+ */
+ private int maxProposalSize = 0;
--- End diff --
Done.
> Ability to monitor the jute.maxBuffer usage in real-time
> --------------------------------------------------------
>
> Key: ZOOKEEPER-2933
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2933
> Project: ZooKeeper
> Issue Type: New Feature
> Components: jute, server
> Reporter: Andor Molnar
> Assignee: Andor Molnar
> Labels: buffer, buffer-length
> Fix For: 3.5.4, 3.6.0
>
>
> This is related to jute.maxbuffer problems on the server side when Leader
> generates a proposal that doesn't fit into Follower's Jute buffer causing the
> quorum to be broken.
> Proposed solution is to add the following new JMX Beans:
> 1. Add getJuteMaxBuffer to ZookeeperServerBean which monitors the current
> jute.maxbuffer setting,
> 2. Add get last/min/max ProposalSize to LeaderBean which monitors the size of
> the latest/min/max proposal.
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