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| layout: post |
| title: Apache Storm 2.2.1 Released |
| author: Ethan Li |
| --- |
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| The Apache Storm community is pleased to announce that version 2.2.1 has been released and is available from [the downloads page](/downloads.html). |
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| This is a maintenance release that includes a number of important bug fixes that improve Apache Storm's performance, stability and fault tolerance. We encourage users of previous versions to upgrade to this latest release. |
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| Thanks |
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| Special thanks are due to all those who have contributed to Apache Storm -- whether through direct code contributions, documentation, bug reports, or helping other users on the mailing lists. Your efforts are much appreciated. |
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| Changes in this Release |
| --------- |
| <h2>Bug</h2> |
| <ul> |
| <li>[<a href="https://issues.apache.org/jira/browse/STORM-3553">STORM-3553</a>] - Upgrade JQuery to 3.5.1</li> |
| <li>[<a href="https://issues.apache.org/jira/browse/STORM-3663">STORM-3663</a>] - Topology with Mockito 1.x fails to run unit tests </li> |
| <li>[<a href="https://issues.apache.org/jira/browse/STORM-3704">STORM-3704</a>] - Cosmetic: columns shifted in "Topology summary" table</li> |
| <li>[<a href="https://issues.apache.org/jira/browse/STORM-3763">STORM-3763</a>] - Backpressure message ignored by the receiver caused the topology to not progress</li> |
| <li>[<a href="https://issues.apache.org/jira/browse/STORM-3767">STORM-3767</a>] - NPE on getComponentPendingProfileActions </li> |
| <li>[<a href="https://issues.apache.org/jira/browse/STORM-3785">STORM-3785</a>] - Rate metrics are wrongly divided by 1000000</li> |
| </ul> |
