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deploy: e9c4077
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zhangyangyu committed Sep 4, 2024
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2 changes: 1 addition & 1 deletion print.html
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Expand Up @@ -2029,7 +2029,7 @@ <h2 id="a-short-introduction-to-tidbs-ddl"><a class="header" href="#a-short-intr
// StatePublic means this schema element is ok for all write and read operations.
StatePublic
</code></pre>
<p>Note: this is a very different implementation from MySQL, which uses Meta Data Locks (MDL) for keeping a single version of the MySQL instance schemas at a time. This results in MySQL replicas can have different version of the schemas, due to lag in asyncronous replication. TiDB has always a consistent view of all schemas in the cluster.</p>
<p>Note: this is a very different implementation from MySQL, which uses Meta Data Locks (MDL) for keeping a single version of the MySQL instance schemas at a time. This results in MySQL replicas can have different version of the schemas, due to lag in asynchronous replication. TiDB has always a consistent view of all schemas in the cluster.</p>
<h2 id="implementation"><a class="header" href="#implementation">Implementation</a></h2>
<p>All DDL jobs goes through two cluster wide DDL Queues:</p>
<ul>
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2 changes: 1 addition & 1 deletion searchindex.js

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2 changes: 1 addition & 1 deletion searchindex.json

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2 changes: 1 addition & 1 deletion understand-tidb/ddl.html
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Expand Up @@ -195,7 +195,7 @@ <h2 id="a-short-introduction-to-tidbs-ddl"><a class="header" href="#a-short-intr
// StatePublic means this schema element is ok for all write and read operations.
StatePublic
</code></pre>
<p>Note: this is a very different implementation from MySQL, which uses Meta Data Locks (MDL) for keeping a single version of the MySQL instance schemas at a time. This results in MySQL replicas can have different version of the schemas, due to lag in asyncronous replication. TiDB has always a consistent view of all schemas in the cluster.</p>
<p>Note: this is a very different implementation from MySQL, which uses Meta Data Locks (MDL) for keeping a single version of the MySQL instance schemas at a time. This results in MySQL replicas can have different version of the schemas, due to lag in asynchronous replication. TiDB has always a consistent view of all schemas in the cluster.</p>
<h2 id="implementation"><a class="header" href="#implementation">Implementation</a></h2>
<p>All DDL jobs goes through two cluster wide DDL Queues:</p>
<ul>
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