<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Pulsar stats · Apache Pulsar</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><meta name="generator" content="Docusaurus"/><meta name="description" content="## Partitioned topics"/><meta name="docsearch:version" content="2.10.0"/><meta name="docsearch:language" content="en"/><meta property="og:title" content="Pulsar stats · Apache Pulsar"/><meta property="og:type" content="website"/><meta property="og:url" content="https://pulsar.apache.org/"/><meta property="og:description" content="## Partitioned topics"/><meta name="twitter:card" content="summary"/><meta name="twitter:image" content="https://pulsar.apache.org/img/pulsar.svg"/><link rel="shortcut icon" href="/img/pulsar.ico"/><link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/atom-one-dark.min.css"/><link rel="alternate" type="application/atom+xml" href="https://pulsar.apache.org/blog/atom.xml" title="Apache Pulsar Blog ATOM Feed"/><link rel="alternate" type="application/rss+xml" href="https://pulsar.apache.org/blog/feed.xml" title="Apache Pulsar Blog RSS Feed"/><link rel="stylesheet" href="/css/code-blocks-buttons.css"/><script type="text/javascript" src="https://buttons.github.io/buttons.js"></script><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.0/clipboard.min.js"></script><script type="text/javascript" src="/js/custom.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head><body class="sideNavVisible separateOnPageNav"><div class="fixedHeaderContainer"><div class="headerWrapper wrapper"><header><a href="/en"><img class="logo" src="/img/pulsar.svg" alt="Apache Pulsar"/></a><a href="/en/versions"><h3>2.10.0</h3></a><div class="navigationWrapper navigationSlider"><nav class="slidingNav"><ul class="nav-site nav-site-internal"><li class="siteNavGroupActive"><a href="/docs/en/getting-started-standalone" target="_self">Docs</a></li><li class=""><a href="/en/download" target="_self">Download</a></li><li class="siteNavGroupActive"><a href="/docs/en/client-libraries" target="_self">Clients</a></li><li class=""><a href="#restapis" target="_self">REST APIs</a></li><li class=""><a href="#cli" target="_self">Cli</a></li><li class=""><a href="/blog/" target="_self">Blog</a></li><li class=""><a href="#community" target="_self">Community</a></li><li class=""><a href="#apache" target="_self">Apache</a></li><li class=""><a href="https://pulsar-next.staged.apache.org/" target="_self">New Website (Beta)</a></li><span><li><a id="languages-menu" href="#"><img class="languages-icon" src="/img/language.svg" alt="Languages icon"/>English</a><div id="languages-dropdown" class="hide"><ul id="languages-dropdown-items"><li><a href="/docs/ja/administration-stats">日本語</a></li><li><a href="/docs/fr/administration-stats">Français</a></li><li><a href="/docs/ko/administration-stats">한국어</a></li><li><a href="/docs/zh-CN/administration-stats">中文</a></li><li><a href="/docs/zh-TW/administration-stats">繁體中文</a></li><li><a href="https://crowdin.com/project/apache-pulsar" target="_blank" rel="noreferrer noopener">Help Translate</a></li></ul></div></li><script>
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<table>
<thead>
<tr><th>Stat</th><th>Description</th></tr>
</thead>
<tbody>
<tr><td>msgRateIn</td><td>The sum of publish rates of all local and replication publishers in messages per second.</td></tr>
<tr><td>msgThroughputIn</td><td>Same as msgRateIn but in bytes per second instead of messages per second.</td></tr>
<tr><td>msgRateOut</td><td>The sum of dispatch rates of all local and replication consumers in messages per second.</td></tr>
<tr><td>msgThroughputOut</td><td>Same as msgRateOut but in bytes per second instead of messages per second.</td></tr>
<tr><td>averageMsgSize</td><td>Average message size, in bytes, from this publisher within the last interval.</td></tr>
<tr><td>storageSize</td><td>The sum of storage size of the ledgers for this topic.</td></tr>
<tr><td>publishers</td><td>The list of all local publishers into the topic. Publishers can be anywhere from zero to thousands.</td></tr>
<tr><td>producerId</td><td>Internal identifier for this producer on this topic.</td></tr>
<tr><td>producerName</td><td>Internal identifier for this producer, generated by the client library.</td></tr>
<tr><td>address</td><td>IP address and source port for the connection of this producer.</td></tr>
<tr><td>connectedSince</td><td>Timestamp this producer is created or last reconnected.</td></tr>
<tr><td>subscriptions</td><td>The list of all local subscriptions to the topic.</td></tr>
<tr><td>my-subscription</td><td>The name of this subscription (client defined).</td></tr>
<tr><td>msgBacklog</td><td>The count of messages in backlog for this subscription.</td></tr>
<tr><td>type</td><td>This subscription type.</td></tr>
<tr><td>msgRateExpired</td><td>The rate at which messages are discarded instead of dispatched from this subscription due to TTL.</td></tr>
<tr><td>consumers</td><td>The list of connected consumers for this subscription.</td></tr>
<tr><td>consumerName</td><td>Internal identifier for this consumer, generated by the client library.</td></tr>
<tr><td>availablePermits</td><td>The number of messages this consumer has space for in the listen queue of client library. A value of 0 means the queue of client library is full and receive() is not being called. A nonzero value means this consumer is ready to be dispatched messages.</td></tr>
<tr><td>replication</td><td>This section gives the stats for cross-colo replication of this topic.</td></tr>
<tr><td>replicationBacklog</td><td>The outbound replication backlog in messages.</td></tr>
<tr><td>connected</td><td>Whether the outbound replicator is connected.</td></tr>
<tr><td>replicationDelayInSeconds</td><td>How long the oldest message has been waiting to be sent through the connection, if connected is true.</td></tr>
<tr><td>inboundConnection</td><td>The IP and port of the broker in the publisher connection of remote cluster to this broker.</td></tr>
<tr><td>inboundConnectedSince</td><td>The TCP connection being used to publish messages to the remote cluster. If no local publishers are connected, this connection is automatically closed after a minute.</td></tr>
</tbody>
</table>
<h2><a class="anchor" aria-hidden="true" id="topics"></a><a href="#topics" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Topics</h2>
<table>
<thead>
<tr><th>Stat</th><th>Description</th></tr>
</thead>
<tbody>
<tr><td>entriesAddedCounter</td><td>Messages published since this broker loads this topic.</td></tr>
<tr><td>numberOfEntries</td><td>Total number of messages being tracked.</td></tr>
<tr><td>totalSize</td><td>Total storage size in bytes of all messages.</td></tr>
<tr><td>currentLedgerEntries</td><td>Count of messages written to the ledger currently open for writing.</td></tr>
<tr><td>currentLedgerSize</td><td>Size in bytes of messages written to ledger currently open for writing.</td></tr>
<tr><td>lastLedgerCreatedTimestamp</td><td>Time when last ledger is created.</td></tr>
<tr><td>lastLedgerCreationFailureTimestamp</td><td>Time when last ledger is failed.</td></tr>
<tr><td>waitingCursorsCount</td><td>How many cursors are caught up and waiting for a new message to be published.</td></tr>
<tr><td>pendingAddEntriesCount</td><td>How many messages have (asynchronous) write requests you are waiting on completion.</td></tr>
<tr><td>lastConfirmedEntry</td><td>The ledgerid:entryid of the last message successfully written. If the entryid is -1, then the ledger is opened or is being currently opened but has no entries written yet.</td></tr>
<tr><td>state</td><td>The state of the cursor ledger. Open means you have a cursor ledger for saving updates of the markDeletePosition.</td></tr>
<tr><td>ledgers</td><td>The ordered list of all ledgers for this topic holding its messages.</td></tr>
<tr><td>cursors</td><td>The list of all cursors on this topic. Every subscription you saw in the topic stats has one.</td></tr>
<tr><td>markDeletePosition</td><td>The ack position: the last message the subscriber acknowledges receiving.</td></tr>
<tr><td>readPosition</td><td>The latest position of subscriber for reading message.</td></tr>
<tr><td>waitingReadOp</td><td>This is true when the subscription reads the latest message that is published to the topic and waits on new messages to be published.</td></tr>
<tr><td>pendingReadOps</td><td>The counter for how many outstanding read requests to the BookKeepers you have in progress.</td></tr>
<tr><td>messagesConsumedCounter</td><td>Number of messages this cursor acks since this broker loads this topic.</td></tr>
<tr><td>cursorLedger</td><td>The ledger used to persistently store the current markDeletePosition.</td></tr>
<tr><td>cursorLedgerLastEntry</td><td>The last entryid used to persistently store the current markDeletePosition.</td></tr>
<tr><td>individuallyDeletedMessages</td><td>If Acks are done out of order, shows the ranges of messages Acked between the markDeletePosition and the read-position.</td></tr>
<tr><td>lastLedgerSwitchTimestamp</td><td>The last time the cursor ledger is rolled over.</td></tr>
</tbody>
</table>
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