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Update notes for 2019-03-24

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Alan Orth
2019-03-24 16:11:09 +02:00
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@ -25,7 +25,7 @@ I think I will need to ask Udana to re-copy and paste the abstracts with more ca
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<meta property="og:url" content="https://alanorth.github.io/cgspace-notes/2019-03/" />
<meta property="article:published_time" content="2019-03-01T12:16:30&#43;01:00"/>
<meta property="article:modified_time" content="2019-03-23T12:50:02&#43;02:00"/>
<meta property="article:modified_time" content="2019-03-24T09:20:19&#43;02:00"/>
<meta name="twitter:card" content="summary"/>
<meta name="twitter:title" content="March, 2019"/>
@ -55,9 +55,9 @@ I think I will need to ask Udana to re-copy and paste the abstracts with more ca
"@type": "BlogPosting",
"headline": "March, 2019",
"url": "https://alanorth.github.io/cgspace-notes/2019-03/",
"wordCount": "4332",
"wordCount": "4494",
"datePublished": "2019-03-01T12:16:30&#43;01:00",
"dateModified": "2019-03-23T12:50:02&#43;02:00",
"dateModified": "2019-03-24T09:20:19&#43;02:00",
"author": {
"@type": "Person",
"name": "Alan Orth"
@ -944,6 +944,26 @@ org.postgresql.util.PSQLException: This statement has been closed.
</ul></li>
</ul>
<h2 id="2019-03-24">2019-03-24</h2>
<ul>
<li>I did some more tests with the <a href="https://github.com/gnosly/TomcatJdbcConnectionTest">TomcatJdbcConnectionTest</a> thing and while monitoring the number of active connections in jconsole and after adjusting the limits quite low I eventually saw some connections get abandoned</li>
<li>I forgot that to connect to a remote JMX session with jconsole you need to use a dynamic SSH SOCKS proxy (as I originally <a href="/cgspace-notes/2017-11/">discovered in 2017-11</a>:</li>
</ul>
<pre><code>$ jconsole -J-DsocksProxyHost=localhost -J-DsocksProxyPort=3000 service:jmx:rmi:///jndi/rmi://localhost:5400/jmxrmi -J-DsocksNonProxyHosts=
</code></pre>
<ul>
<li>I need to remember to check the active connections next time we have issues with blank item pages on CGSpace</li>
<li>In other news, I&rsquo;ve been running G1GC on DSpace Test (linode19) since 2018-11-08 without realizing it, which is probably a good thing</li>
<li>I deployed the latest <code>5_x-prod</code> branch on CGSpace (linode18) and added more validation to the JDBC pool in our Tomcat config
<ul>
<li>This includes the new <code>testWhileIdle</code> and <code>testOnConnect</code> pool settings as well as the two new JDBC interceptors: <code>StatementFinalizer</code> and <code>ConnectionState</code> that should hopefully make sure our connections in the pool are valid</li>
</ul></li>
</ul>
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