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Update notes for 2017-08-31

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Alan Orth 2017-08-31 22:40:57 +07:00
parent 9c5095365e
commit dded1179fa
Signed by: alanorth
GPG Key ID: 0FB860CC9C45B1B9
3 changed files with 29 additions and 8 deletions
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10
content/post/2017-08.md
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@ -375,3 +375,13 @@ dspace=# select handle from item, handle where handle.resource_id = item.item_id
- I notice that in many WLE collections Marianne Gadeberg is in the edit or approval steps, but she is also in the groups for those steps.
- I think we need to have a process to go back and check / fix some of these scenarios—to remove her user from the step and instead add her to the group—because we have way too many authorizations and in late 2016 we had [performance issues with Solr](https://github.com/ilri/rmg-ansible-public/commit/358b5ea43f9e5820986f897c9d560937c702ac6e) because of this
- I asked Sisay about this and hinted that he should go back and fix these things, but let's see what he says
- Saw CGSpace go down briefly today and noticed SQL connection pool errors in the dspace log file:
```
ERROR org.dspace.storage.rdbms.DatabaseManager @ SQL connection Error
org.apache.commons.dbcp.SQLNestedException: Cannot get a connection, pool error Timeout waiting for idle object
```
- Looking at the logs I see we have been having hundreds or thousands of these errors a few times per week in 2017-07 and almost every day in 2017-08
- It seems that I changed the `db.maxconnections` setting from 70 to 40 around 2017-08-14, but Macaroni Bros also reduced their hourly hammering of the REST API then
- Nevertheless, it seems like a connection limit is not enough and that I should increase it (as well as the system's PostgreSQL `max_connections`

17
public/2017-08/index.html
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@ -37,7 +37,7 @@ Then I cleaned up the author authorities and HTML characters in OpenRefine and s
<meta property="article:published_time" content="2017-08-01T11:51:52&#43;03:00"/>
<meta property="article:modified_time" content="2017-08-29T00:24:05&#43;07:00"/>
<meta property="article:modified_time" content="2017-08-31T10:35:17&#43;07:00"/>
@ -85,9 +85,9 @@ Then I cleaned up the author authorities and HTML characters in OpenRefine and s
"@type": "BlogPosting",
"headline": "August, 2017",
"url": "https://alanorth.github.io/cgspace-notes/2017-08/",
"wordCount": "3428",
"wordCount": "3542",
"datePublished": "2017-08-01T11:51:52&#43;03:00",
"dateModified": "2017-08-29T00:24:05&#43;07:00",
"dateModified": "2017-08-31T10:35:17&#43;07:00",
"author": {
"@type": "Person",
"name": "Alan Orth"
@ -589,6 +589,17 @@ WHERE {
<li>I notice that in many WLE collections Marianne Gadeberg is in the edit or approval steps, but she is also in the groups for those steps.</li>
<li>I think we need to have a process to go back and check / fix some of these scenarios—to remove her user from the step and instead add her to the group—because we have way too many authorizations and in late 2016 we had <a href="https://github.com/ilri/rmg-ansible-public/commit/358b5ea43f9e5820986f897c9d560937c702ac6e">performance issues with Solr</a> because of this</li>
<li>I asked Sisay about this and hinted that he should go back and fix these things, but let&rsquo;s see what he says</li>
<li>Saw CGSpace go down briefly today and noticed SQL connection pool errors in the dspace log file:</li>
</ul>
<pre><code>ERROR org.dspace.storage.rdbms.DatabaseManager @ SQL connection Error
org.apache.commons.dbcp.SQLNestedException: Cannot get a connection, pool error Timeout waiting for idle object
</code></pre>
<ul>
<li>Looking at the logs I see we have been having hundreds or thousands of these errors a few times per week in 2017-07 and almost every day in 2017-08</li>
<li>It seems that I changed the <code>db.maxconnections</code> setting from 70 to 40 around 2017-08-14, but Macaroni Bros also reduced their hourly hammering of the REST API then</li>
<li>Nevertheless, it seems like a connection limit is not enough and that I should increase it (as well as the system&rsquo;s PostgreSQL <code>max_connections</code></li>
</ul>

10
public/sitemap.xml
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@ -4,7 +4,7 @@
<url>
<loc>https://alanorth.github.io/cgspace-notes/2017-08/</loc>
<lastmod>2017-08-29T00:24:05+07:00</lastmod>
<lastmod>2017-08-31T10:35:17+07:00</lastmod>
</url>
<url>
@ -114,7 +114,7 @@
<url>
<loc>https://alanorth.github.io/cgspace-notes/</loc>
<lastmod>2017-08-29T00:24:05+07:00</lastmod>
<lastmod>2017-08-31T10:35:17+07:00</lastmod>
<priority>0</priority>
</url>
@ -125,19 +125,19 @@
<url>
<loc>https://alanorth.github.io/cgspace-notes/tags/notes/</loc>
<lastmod>2017-08-29T00:24:05+07:00</lastmod>
<lastmod>2017-08-31T10:35:17+07:00</lastmod>
<priority>0</priority>
</url>
<url>
<loc>https://alanorth.github.io/cgspace-notes/post/</loc>
<lastmod>2017-08-29T00:24:05+07:00</lastmod>
<lastmod>2017-08-31T10:35:17+07:00</lastmod>
<priority>0</priority>
</url>
<url>
<loc>https://alanorth.github.io/cgspace-notes/tags/</loc>
<lastmod>2017-08-29T00:24:05+07:00</lastmod>
<lastmod>2017-08-31T10:35:17+07:00</lastmod>
<priority>0</priority>
</url>