<li>Found a way to get items with null/empty metadata values from SQL</li>
<li>First, find the <code>metadata_field_id</code> for the field you want from the <code>metadatafieldregistry</code> table:</li>
</ul>
<pre><code>dspacetest=# select * from metadatafieldregistry;
</code></pre>
<ul>
<li>In this case our country field is 78</li>
<li>Now find all resources with type 2 (item) that have null/empty values for that field:</li>
</ul>
<pre><code>dspacetest=# select resource_id from metadatavalue where resource_type_id=2 and metadata_field_id=78 and (text_value='' OR text_value IS NULL);
</code></pre>
<ul>
<li>Then you can find the handle that owns it from its <code>resource_id</code>:</li>
</ul>
<pre><code>dspacetest=# select handle from item, handle where handle.resource_id = item.item_id AND item.item_id = '22678';
</code></pre>
<ul>
<li>It&rsquo;s 25 items so editing in the web UI is annoying, let&rsquo;s try SQL!</li>
</ul>
<pre><code>dspacetest=# delete from metadatavalue where metadata_field_id=78 and text_value='';
DELETE 25
</code></pre>
<ul>
<li>After that perhaps a regular <code>dspace index-discovery</code> (no -b) <em>should</em> suffice&hellip;</li>
<li>Hmm, I indexed, cleared the Cocoon cache, and restarted Tomcat but the 25 &ldquo;|||&rdquo; countries are still there</li>
<li>Maybe I need to do a full re-index&hellip;</li>
<li>Working on cleaning up Abenet&rsquo;s DAGRIS data with OpenRefine</li>
<li>I discovered two really nice functions in OpenRefine: <code>value.trim()</code> and <code>value.escape(&quot;javascript&quot;)</code> which shows whitespace characters like <code>\r\n</code>!</li>
<li>For some reason when you import an Excel file into OpenRefine it exports dates like 1949 to 1949.0 in the CSV</li>
<li>I re-import the resulting CSV and run a GREL on the date issued column: <code>value.replace(&quot;\.0&quot;, &quot;&quot;)</code></li>
<li>I need to start running DSpace in Mac OS X instead of a Linux VM</li>
<li>After building and running a <code>fresh_install</code> I symlinked the webapps into Tomcat&rsquo;s webapps folder:</li>
<li>Add CATALINA_OPTS in <code>/opt/brew/Cellar/tomcat/8.0.30/libexec/bin/setenv.sh</code>, as this script is sourced by the <code>catalina</code> startup script</li>
<li>Whip up some quick CSS to make the button in the submission workflow use the XMLUI theme&rsquo;s brand colors (<a href="https://github.com/ilri/DSpace/issues/154">#154</a>)</li>
<li>We should install it in /opt/letsencrypt and then script the renewal script, but first we have to wire up some variables and template stuff based on the script here: <a href="https://letsencrypt.org/howitworks/">https://letsencrypt.org/howitworks/</a></li>
<li>I had to export some CIAT items that were being cleaned up on the test server and I noticed their <code>dc.contributor.author</code> fields have DSpace 5 authority index UUIDs&hellip;</li>
<li>To clean those up in OpenRefine I used this GREL expression: <code>value.replace(/::\w{8}-\w{4}-\w{4}-\w{4}-\w{12}::600/,&quot;&quot;)</code></li>
<li>Getting more and more hangs on DSpace Test, seemingly random but also during CSV import</li>
<li>Logs don&rsquo;t always show anything right when it fails, but eventually one of these appears:</li>
</ul>
<pre><code>org.dspace.discovery.SearchServiceException: Error while processing facet fields: java.lang.OutOfMemoryError: Java heap space
</code></pre>
<ul>
<li>or</li>
</ul>
<pre><code>Caused by: java.util.NoSuchElementException: Timeout waiting for idle object
</code></pre>
<ul>
<li>Right now DSpace Test&rsquo;s Tomcat heap is set to 1536m and we have quite a bit of free RAM:</li>
</ul>
<pre><code># free -m
total used free shared buffers cached
Mem: 3950 3902 48 9 37 1311
-/+ buffers/cache: 2552 1397
Swap: 255 57 198
</code></pre>
<ul>
<li>So I&rsquo;ll bump up the Tomcat heap to 2048 (CGSpace production server is using 3GB)</li>
<li>Massaging some CIAT data in OpenRefine</li>
<li>There are 1200 records that have PDFs, and will need to be imported into CGSpace</li>
<li>I created a <code>filename</code> column based on the <code>dc.identifier.url</code> column using the following transform:</li>
<li>Then I wrote a tool called <a href="https://gist.github.com/alanorth/2206f24483fe5f0454fc"><code>generate-thumbnails.py</code></a> to download the PDFs and generate thumbnails for them, for example:</li>
<li>Also, I&rsquo;m not sure if we import these items, will be remove the <code>dc.identifier.url</code> field from the records?</li>
<li>Looking at CIAT&rsquo;s records again, there are some files linking to PDFs on Slide Share, Embrapa, UEA UK, and Condesan, so I&rsquo;m not sure if we can use those</li>
<li>265 items have dirty, URL-encoded filenames:</li>
</ul>
<pre><code>$ ls | grep -c -E &quot;%&quot;
265
</code></pre>
<ul>
<li>I suggest that we import ~850 or so of the clean ones first, then do the rest after I can find a clean/reliable way to decode the filenames</li>
<li>Merge pull requests for submission form theming (<a href="https://github.com/ilri/DSpace/pull/178">#178</a>) and missing center subjects in XMLUI item views (<a href="https://github.com/ilri/DSpace/pull/176">#176</a>)</li>
<li>They will be deployed on CGSpace the next time I re-deploy</li>
<li>This turns the URLs into human-readable versions that we can use as proper filenames</li>
<li>Run web server and system updates on DSpace Test and reboot</li>
<li>To merge <code>dc.identifier.url</code> and <code>dc.identifier.url[]</code>, rename the second column so it doesn&rsquo;t have the brackets, like <code>dc.identifier.url2</code></li>
<li>Then you create a facet for blank values on each column, show the rows that have values for one and not the other, then transform each independently to have the contents of the other, with &ldquo;||&rdquo; in between</li>
<li>Work on Python script for parsing and downloading PDF records from <code>dc.identifier.url</code></li>
<li>To turn <code>dc.identifier.url</code> into filenames, create a new column based o</li>
<li>To get filenames from <code>dc.identifier.url</code>, create a new column based on this transform: <code>forEach(value.split('||'), v, v.split('/')[-1]).join('||')</code></li>
<li>This also works for records that have multiple URLs (separated by &ldquo;||&rdquo;)</li>
<li>SAFBuilder has a bug preventing it from processing filenames containing more than one underscore</li>
<li>Need to re-process the filename column to replace multiple underscores with one: <code>value.replace(/_{2,}/, &quot;_&quot;)</code></li>
<li>Turns out the &ldquo;bug&rdquo; in SAFBuilder isn&rsquo;t a bug, it&rsquo;s a feature that allows you to encode extra information like the destintion bundle in the filename</li>
<li>Also, it seems DSpace&rsquo;s SAF import tool doesn&rsquo;t like importing filenames that have accents in them:</li>
</ul>
<pre><code>java.io.FileNotFoundException: /usr/share/tomcat7/SimpleArchiveFormat/item_1021/CIAT_COLOMBIA_000075_Medición_de_palatabilidad_en_forrajes.pdf (No such file or directory)
</code></pre>
<ul>
<li>Need to rename files to have no accents or umlauts, etc&hellip;</li>
<li>Useful custom text facet for URLs ending with &ldquo;.pdf&rdquo;: <code>value.endsWith(&quot;.pdf&quot;)</code></li>
<li>Move ILRI collection <code>10568/12503</code> from <code>10568/27869</code> to <code>10568/27629</code> using the <a href="https://gist.github.com/alanorth/392c4660e8b022d99dfa">move_collections.sh</a> script I wrote last year.</li>
<li>I realized it is only necessary to clear the Cocoon cache after moving collections—rather than reindexing—as no metadata has changed, and therefore no search or browse indexes need to be updated.</li>
<li>Update GitHub wiki for documentation of <a href="https://github.com/ilri/DSpace/wiki/Maintenance-Tasks">maintenance tasks</a>.</li>
<li>Change &ldquo;Extension material&rdquo; to &ldquo;Extension Material&rdquo; in input-forms.xml (a mistake that fell through the cracks when we fixed the others in DSpace 4 era)</li>
<li>Work on tweaks and updates for the social sharing icons on item pages: add Delicious and Mendeley (from Academicons), make links open in new windows, and set the icon color to the theme&rsquo;s primary color (<a href="https://github.com/ilri/DSpace/issues/157">#157</a>)</li>
<li>Tweak date-based facets to show more values in drill-down ranges (<a href="https://github.com/ilri/DSpace/issues/162">#162</a>)</li>
<li>Need to remember to clear the Cocoon cache after deployment or else you don&rsquo;t see the new ranges immediately</li>
<li>Set up recipe on IFTTT to tweet new items from the CGSpace Atom feed to my twitter account</li>
<li>Altmetrics&rsquo; support for Handles is kinda weak, so they can&rsquo;t associate our items with DOIs until they are tweeted or blogged, etc first.</li>
<li>Still waiting for my IFTTT recipe to fire, two days later</li>
<li>It looks like the Atom feed on CGSpace hasn&rsquo;t changed in two days, but there have definitely been new items</li>
<li>The RSS feed is nearly as old, but has different old items there</li>
<li>On a hunch I cleared the Cocoon cache and now the feeds are fresh</li>
<li>Looks like there is configuration option related to this, <code>webui.feed.cache.age</code>, which defaults to 48 hours, though I&rsquo;m not sure what relation it has to the Cocoon cache</li>
<li>In any case, we should change this cache to be something more like 6 hours, as we publish new items several times per day.</li>
<li>Work around a CSS issue with long URLs in the item view (<a href="https://github.com/ilri/DSpace/issues/172">#172</a>)</li>
<li>This included the social icon fixes/updates, date-based facet tweaks, reducing the feed cache age, and fixing a layout issue in XMLUI item view when an item had long URLs</li>
<li>Run nginx updates on CGSpace and DSpace Test (<a href="http://mailman.nginx.org/pipermail/nginx/2016-January/049700.html">1.8.1 and 1.9.10, respectively</a>)</li>
<li>Run updates on DSpace Test and reboot for new Linode kernel <code>Linux 4.4.0-x86_64-linode63</code> (first update in months)</li>
<li>Replace <code>lzop</code> with <code>xz</code> in log compression cron jobs on DSpace Test—it uses less space:</li>
</ul>
<pre><code># cd /home/dspacetest.cgiar.org/log
# ls -lh dspace.log.2015-11-18*
-rw-rw-r-- 1 tomcat7 tomcat7 2.0M Nov 18 23:59 dspace.log.2015-11-18
-rw-rw-r-- 1 tomcat7 tomcat7 387K Nov 18 23:59 dspace.log.2015-11-18.lzo
-rw-rw-r-- 1 tomcat7 tomcat7 169K Nov 18 23:59 dspace.log.2015-11-18.xz
</code></pre>
<ul>
<li>I had used lrzip once, but it needs more memory and is harder to use as it requires the lrztar wrapper</li>
<li>Need to remember to go check if everything is ok in a few days and then change CGSpace</li>
<li>CGSpace went down again (due to PostgreSQL idle connections of course)</li>
<li>Current database settings for DSpace are <code>db.maxconnections = 30</code> and <code>db.maxidle = 8</code>, yet idle connections are exceeding this:</li>
<li>I restarted PostgreSQL and Tomcat and it&rsquo;s back</li>
<li>On a related note of why CGSpace is so slow, I decided to finally try the <code>pgtune</code> script to tune the postgres settings:</li>
<li>Last week it was an average of 8 seconds&hellip; now this is <sup>1</sup>&frasl;<sub>4</sub> of that</li>
<li>CCAFS noticed that one of their items displays only the Atmire statlets: <a href="https://cgspace.cgiar.org/handle/10568/42445">https://cgspace.cgiar.org/handle/10568/42445</a></li>
<li>Atmire commented that we should raise the JVM heap size by ~500M, so it is now <code>-Xms3584m -Xmx3584m</code></li>
<li>We weren&rsquo;t out of heap yet, but it&rsquo;s probably fair enough that the DSpace 5 upgrade (and new Atmire modules) requires more memory so it&rsquo;s ok</li>
<li>I have reverted all the pgtune tweaks from the other day, as they didn&rsquo;t fix the stability issues, so I&rsquo;d rather not have them introducing more variables into the equation</li>
<li>The PostgreSQL stats from Munin all point to something database-related with the DSpace 5 upgrade around mid–late November</li>
<li>Atmire sent <a href="https://github.com/ilri/DSpace/pull/161">some fixes</a> to DSpace&rsquo;s REST API code that was leaving contexts open (causing the slow performance and database issues)</li>
<li>After deploying the fix to CGSpace the REST API is consistently faster:</li>
<li>Switch CGSpace log compression cron jobs from using lzop to xz—the compression isn&rsquo;t as good, but it&rsquo;s much faster and causes less IO/CPU load</li>
<li>Since we figured out (and fixed) the cause of the performance issue, I reverted Google Bot&rsquo;s crawl rate to the &ldquo;Let Google optimize&rdquo; setting</li>
<li>Getting emails from uptimeRobot and uptimeButler that it&rsquo;s down, and Google Webmaster Tools is sending emails that there is an increase in crawl errors</li>
<li>Looks like there are still a bunch of idle PostgreSQL connections:</li>
<li>Troubleshoot the DSpace 5 OAI breakage caused by nginx routing config</li>
<li>The OAI application requests stylesheets and javascript files with the path <code>/oai/static/css</code>, which gets matched here:</li>
</ul>
<pre><code># static assets we can load from the file system directly with nginx
<li>The document root is relative to the xmlui app, so this gets a 404—I&rsquo;m not sure why it doesn&rsquo;t pass to <code>@tomcat</code></li>
<li>Anyways, I can&rsquo;t find any URIs with path <code>/static</code>, and the more important point is to handle all the static theme assets, so we can just remove <code>static</code> from the regex for now (who cares if we can&rsquo;t use nginx to send Etags for OAI CSS!)</li>
<li>Also, I noticed we aren&rsquo;t setting CSP headers on the static assets, because in nginx headers are inherited in child blocks, but if you use <code>add_header</code> in a child block it doesn&rsquo;t inherit the others</li>
<li>We simply need to add <code>include extra-security.conf;</code> to the above location block (but research and test first)</li>
<li>We should add WOFF assets to the list of things to set expires for:</li>
<li>We should also add <code>aspects/Statistics</code> to the location block for static assets (minus <code>static</code> from above):</li>
<li>Need to check <code>/about</code> on CGSpace, as it&rsquo;s blank on my local test server and we might need to add something there</li>
<li>CGSpace has been up and down all day due to PostgreSQL idle connections (current DSpace pool is 90):</li>
<li>I looked closer at the idle connections and saw that many have been idle for hours (current time on server is <code>2015-11-25T20:20:42+0000</code>):</li>
</ul>
<pre><code>$ psql -c 'SELECT * from pg_stat_activity;' | less -S
<li>There is a relevant Jira issue about this: <a href="https://jira.duraspace.org/browse/DS-1458">https://jira.duraspace.org/browse/DS-1458</a></li>
<li>It seems there is some sense changing DSpace&rsquo;s default <code>db.maxidle</code> from unlimited (-1) to something like 8 (Tomcat default) or 10 (Confluence default)</li>
<li>Change <code>db.maxidle</code> from -1 to 10, reduce <code>db.maxconnections</code> from 90 to 50, and restart postgres and tomcat7</li>
<li>Also redeploy DSpace Test with a clean sync of CGSpace and mirror these database settings there as well</li>
<li>Also deploy the nginx fixes for the <code>try_files</code> location block as well as the expires block</li>
<li>CGSpace behaving much better since changing <code>db.maxidle</code> yesterday, but still two up/down notices from monitoring this morning (better than 50!)</li>
<li>CCAFS colleagues mentioned that the REST API is very slow, 24 seconds for one item</li>
<li>Not as bad for me, but still unsustainable if you have to get many:</li>
<li>Perhaps I need to start drastically increasing the connection limits—like to 300—to see if DSpace&rsquo;s thirst can ever be quenched</li>
<li>On another note, SUNScholar&rsquo;s notes suggest adjusting some other postgres variables: <a href="http://wiki.lib.sun.ac.za/index.php/SUNScholar/Optimisations/Database">http://wiki.lib.sun.ac.za/index.php/SUNScholar/Optimisations/Database</a></li>
<li>This might help with REST API speed (which I mentioned above and still need to do real tests)</li>
