cgspace-notes/content/posts/2019-07.md

title	date	author	tags
July, 2019	2019-07-01T12:13:51+03:00	Alan Orth	Notes

2019-07-01

• Create an "AfricaRice books and book chapters" collection on CGSpace for AfricaRice
• Last month Sisay asked why the following "most popular" statistics link for a range of months in 2018 works for the CIAT community on DSpace Test, but not on CGSpace:
  • DSpace Test
  • CGSpace
• Abenet had another similar issue a few days ago when trying to find the stats for 2018 in the RTB community

• If I change the parameters to 2019 I see stats, so I'm really thinking it has something to do with the sharded yearly Solr statistics cores
  • I checked the Solr admin UI and I see all Solr cores loaded, so I don't know what it could be
  • When I check the Atmire content and usage module it seems obvious that there is a problem with the old cores because I dont have anything before 2019-01

• I don't see anyone logged in right now so I'm going to try to restart Tomcat and see if the stats are accessible after Solr comes back up
• I decided to run all system updates on the server (linode18) and reboot it
  • After rebooting Tomcat came back up, but the the Solr statistics cores were not all loaded
  • The error is always (with a different core):

org.apache.solr.common.SolrException: Error CREATEing SolrCore 'statistics-2010': Unable to create core [statistics-2010] Caused by: Lock obtain timed out: NativeFSLock@/home/cgspace.cgiar.org/solr/statistics-2010/data/index/write.lock

• I restarted Tomcat ten times and it never worked...
• I tried to stop Tomcat and delete the write locks:

# systemctl stop tomcat7
# find /dspace/solr/statistics* -iname "*.lock" -print -delete
/dspace/solr/statistics/data/index/write.lock
/dspace/solr/statistics-2010/data/index/write.lock
/dspace/solr/statistics-2011/data/index/write.lock
/dspace/solr/statistics-2012/data/index/write.lock
/dspace/solr/statistics-2013/data/index/write.lock
/dspace/solr/statistics-2014/data/index/write.lock
/dspace/solr/statistics-2015/data/index/write.lock
/dspace/solr/statistics-2016/data/index/write.lock
/dspace/solr/statistics-2017/data/index/write.lock
/dspace/solr/statistics-2018/data/index/write.lock
# find /dspace/solr/statistics* -iname "*.lock" -print -delete
# systemctl start tomcat7

• But it still didn't work!
• I stopped Tomcat, deleted the old locks, and will try to use the "simple" lock file type in solr/statistics/conf/solrconfig.xml:

<lockType>${solr.lock.type:simple}</lockType>

• And after restarting Tomcat it still doesn't work
• Now I'll try going back to "native" locking with unlockAtStartup:

<unlockOnStartup>true</unlockOnStartup>

• Now the cores seem to load, but I still see an error in the Solr Admin UI and I still can't access any stats before 2018
• I filed an issue with Atmire, so let's see if they can help
• And since I'm annoyed and it's been a few months, I'm going to move the JVM heap settings that I've been testing on DSpace Test to CGSpace
• The old ones were:

-Djava.awt.headless=true -Xms8192m -Xmx8192m -XX:+UseConcMarkSweepGC -Dfile.encoding=UTF-8 -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.port=5400 -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=false

• And the new ones come from Solr 4.10.x's startup scripts:

    -Djava.awt.headless=true
    -Xms8192m -Xmx8192m
    -Dfile.encoding=UTF-8
    -XX:NewRatio=3
    -XX:SurvivorRatio=4
    -XX:TargetSurvivorRatio=90
    -XX:MaxTenuringThreshold=8
    -XX:+UseConcMarkSweepGC
    -XX:+UseParNewGC
    -XX:ConcGCThreads=4 -XX:ParallelGCThreads=4
    -XX:+CMSScavengeBeforeRemark
    -XX:PretenureSizeThreshold=64m
    -XX:+UseCMSInitiatingOccupancyOnly
    -XX:CMSInitiatingOccupancyFraction=50
    -XX:CMSMaxAbortablePrecleanTime=6000
    -XX:+CMSParallelRemarkEnabled
    -XX:+ParallelRefProcEnabled
    -Dcom.sun.management.jmxremote
    -Dcom.sun.management.jmxremote.port=1337
    -Dcom.sun.management.jmxremote.ssl=false
    -Dcom.sun.management.jmxremote.authenticate=false

2019-07-02

• Help upload twenty-seven posters from the 2019-05 Sharefair to CGSpace
  • Sisay had already done the SAFBundle so I did some minor corrections to and uploaded them to a temporary collection so I could check them in OpenRefine:

$ sed -i 's/CC-BY 4.0/CC-BY-4.0/' item_*/dublin_core.xml
$ echo "10568/101992" >> item_*/collections
$ dspace import -a -e me@cgiar.org -m 2019-07-02-Sharefair.map -s /tmp/Sharefair_mapped

• I noticed that all twenty-seven items had double dates like "2019-05||2019-05" so I fixed those, but the rest of the metadata looked good so I unmapped them from the temporary collection
• Finish looking at the fifty-six AfricaRice items and upload them to CGSpace:

$ dspace import -a -e me@cgiar.org -m 2019-07-02-AfricaRice-11to73.map -s /tmp/SimpleArchiveFormat

• Peter pointed out that the Sharefair dates I fixed were not actually fixed
  • It seems there is a bug that causes DSpace to not detect changes if the values are the same like "2019-05||2019-05" and you try to remove one
  • To get it to work I had to change some of them to 2019-01, then remove them