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Add notes for 2020-06-04

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Alan Orth
2020-06-06 13:33:23 +03:00
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@ -19,7 +19,7 @@ I tried to build the OAI registry on the freshly migrated DSpace 6 on DSpace Tes
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<meta property="og:url" content="https://alanorth.github.io/cgspace-notes/2020-06/" />
<meta property="article:published_time" content="2020-06-01T13:55:39+03:00" />
<meta property="article:modified_time" content="2020-06-02T15:12:32+03:00" />
<meta property="article:modified_time" content="2020-06-04T14:43:40+03:00" />
<meta name="twitter:card" content="summary"/>
<meta name="twitter:title" content="June, 2020"/>
@ -43,9 +43,9 @@ I tried to build the OAI registry on the freshly migrated DSpace 6 on DSpace Tes
"@type": "BlogPosting",
"headline": "June, 2020",
"url": "https://alanorth.github.io/cgspace-notes/2020-06/",
"wordCount": "737",
"wordCount": "846",
"datePublished": "2020-06-01T13:55:39+03:00",
"dateModified": "2020-06-02T15:12:32+03:00",
"dateModified": "2020-06-04T14:43:40+03:00",
"author": {
"@type": "Person",
"name": "Alan Orth"
@ -211,7 +211,7 @@ java.lang.NullPointerException
</li>
</ul>
<pre><code>$ time chrt -i 0 ionice -c2 -n7 nice -n19 dspace index-discovery -b
...
real 125m37.423s
user 11m20.312s
sys 3m19.965s
@ -223,6 +223,7 @@ sys 3m19.965s
<li>I ran all system updates on the server (linode18) and rebooted it</li>
<li>After it came back up I had to restart Tomcat five times before all Solr statistics cores came up properly</li>
<li>Unfortunately this means that the Tomcat JDBC pooling via JNDI doesn&rsquo;t work, so we&rsquo;re using only the 30 connections reserved for the DSpace CLI from DSpace&rsquo;s own internal pool</li>
<li>Perhaps our previous issues with the database pool from a few years ago will be less now that we have much more aggressive blocking and rate limiting of bots in nginx</li>
</ul>
</li>
<li>I will also import a fresh database snapshot from CGSpace and check if I can map the item in my local environment
@ -240,6 +241,20 @@ sys 3m19.965s
<img src="/cgspace-notes/2020/06/postgres_locks_ALL-year.png" alt="PostgreSQL locks year"></p>
<ul>
<li>I think I need to just leave this as is with the DSpace default JDBC driver for now, but perhaps I could also downgrade the Tomcat version (I deployed Tomcat 7.0.103 in March, so perhaps that&rsquo;s relevant)</li>
<li>Also, I&rsquo;ll start <em>another</em> full reindexing to see if the issue with mapping is somehow also resolved now that the database connections are working better
<ul>
<li>Perhaps related, but this one finished much faster:</li>
</ul>
</li>
</ul>
<pre><code>$ time chrt -i 0 ionice -c2 -n7 nice -n19 dspace index-discovery -b
real 101m41.195s
user 10m9.569s
sys 3m13.929s
</code></pre><ul>
<li>Unfortunately the item is still not showing up in the item mapper&hellip;</li>
<li>Something happened to AReS Explorer (linode20) so I ran all system updates and rebooted it</li>
</ul>
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