<li>I tried importing a PostgreSQL snapshot from CGSpace and had errors due to missing Atmire database migrations
<ul>
<li>If I try to run <code>dspace database migrate</code> I get the IDs of the migrations that are missing</li>
<li>I delete them manually in psql:</li>
</ul>
</li>
</ul>
<pre><code>dspace63=# DELETE FROM schema_version WHERE version IN ('5.0.2015.01.27', '5.6.2015.12.03.2', '5.6.2016.08.08', '5.0.2017.04.28', '5.0.2017.09.25', '5.8.2015.12.03.3');
</code></pre><ul>
<li>Then I ran <code>dspace database migrate</code> and got an error:</li>
Statement : ALTER TABLE metadatavalue DROP COLUMN IF EXISTS resource_id
at org.flywaydb.core.internal.dbsupport.SqlScript.execute(SqlScript.java:117)
at org.flywaydb.core.internal.resolver.sql.SqlMigrationExecutor.execute(SqlMigrationExecutor.java:71)
at org.flywaydb.core.internal.command.DbMigrate.doMigrate(DbMigrate.java:352)
at org.flywaydb.core.internal.command.DbMigrate.access$1100(DbMigrate.java:47)
at org.flywaydb.core.internal.command.DbMigrate$4.doInTransaction(DbMigrate.java:308)
at org.flywaydb.core.internal.util.jdbc.TransactionTemplate.execute(TransactionTemplate.java:72)
at org.flywaydb.core.internal.command.DbMigrate.applyMigration(DbMigrate.java:305)
at org.flywaydb.core.internal.command.DbMigrate.access$1000(DbMigrate.java:47)
at org.flywaydb.core.internal.command.DbMigrate$2.doInTransaction(DbMigrate.java:230)
at org.flywaydb.core.internal.command.DbMigrate$2.doInTransaction(DbMigrate.java:173)
at org.flywaydb.core.internal.util.jdbc.TransactionTemplate.execute(TransactionTemplate.java:72)
at org.flywaydb.core.internal.command.DbMigrate.migrate(DbMigrate.java:173)
at org.flywaydb.core.Flyway$1.execute(Flyway.java:959)
at org.flywaydb.core.Flyway$1.execute(Flyway.java:917)
at org.flywaydb.core.Flyway.execute(Flyway.java:1373)
at org.flywaydb.core.Flyway.migrate(Flyway.java:917)
at org.dspace.storage.rdbms.DatabaseUtils.updateDatabase(DatabaseUtils.java:662)
... 8 more
Caused by: org.postgresql.util.PSQLException: ERROR: cannot drop table metadatavalue column resource_id because other objects depend on it
Detail: view eperson_metadata depends on table metadatavalue column resource_id
Hint: Use DROP ... CASCADE to drop the dependent objects too.
at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2422)
at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:2167)
at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:306)
at org.postgresql.jdbc.PgStatement.executeInternal(PgStatement.java:441)
at org.postgresql.jdbc.PgStatement.execute(PgStatement.java:365)
at org.postgresql.jdbc.PgStatement.executeWithFlags(PgStatement.java:307)
at org.postgresql.jdbc.PgStatement.executeCachedSql(PgStatement.java:293)
at org.postgresql.jdbc.PgStatement.executeWithFlags(PgStatement.java:270)
at org.postgresql.jdbc.PgStatement.execute(PgStatement.java:266)
at org.apache.commons.dbcp2.DelegatingStatement.execute(DelegatingStatement.java:291)
at org.apache.commons.dbcp2.DelegatingStatement.execute(DelegatingStatement.java:291)
at org.flywaydb.core.internal.dbsupport.JdbcTemplate.executeStatement(JdbcTemplate.java:238)
at org.flywaydb.core.internal.dbsupport.SqlScript.execute(SqlScript.java:114)
... 24 more
</code></pre><ul>
<li>I think I might need to update the sequences first… nope</li>
<li>Perhaps it’s due to some missing bitstream IDs and I need to run <code>dspace cleanup</code> on CGSpace and take a new PostgreSQL dump… nope</li>
<li>A thread on the dspace-tech mailing list regarding this migration noticed that his database had some views created that were using the <code>resource_id</code> column</li>
<li>Our database had the same issue, where the <code>eperson_metadata</code> view was created by something (Atmire module?) but has no references in the vanilla DSpace code, so I dropped it and tried the migration again:</li>
</ul>
<pre><code>dspace63=# DROP VIEW eperson_metadata;
DROP VIEW
</code></pre><ul>
<li>After that the migration was successful and DSpace starts up successfully and begins indexing
<li>xmlui, solr, jspui, rest, and oai are working (rest was redirecting to HTTPS, so I set the Tomcat connector to <code>secure="true"</code> and it fixed it on localhost, but caused other issues so I disabled it for now)</li>
<li><inputchecked=""disabled=""type="checkbox">Community and collection pages only show one recent submission (seems that there is only one item in Solr?)</li>
<li><inputchecked=""disabled=""type="checkbox">Order of navigation elements in right side bar (“My Account” etc, compare to DSpace Test)</li>
<li><inputdisabled=""type="checkbox">Home page trail says “CGSpace Home” instead of “CGSpace Home / Community List” (see DSpace Test)</li>
</ul>
</li>
<li>There are lots of errors in the DSpace log, which might explain some of the issues with recent submissions / Solr:</li>
<li>If I look in Solr’s search core I do actually see items with integers for their resource ID, which I think are all supposed to be UUIDs now…</li>
<li>I dropped all the documents in the search core:</li>
</ul>
<pre><code>$ http --print b 'http://localhost:8080/solr/search/update?stream.body=<delete><query>*:*</query></delete>&commit=true'
</code></pre><ul>
<li>Still didn’t work, so I’m going to try a clean database import and migration:</li>
dspace63=# DELETE FROM schema_version WHERE version IN ('5.0.2015.01.27', '5.6.2015.12.03.2', '5.6.2016.08.08', '5.0.2017.04.28', '5.0.2017.09.25', '5.8.2015.12.03.3');
<li>I notice that the indexing doesn’t work correctly if I start it manually with <code>dspace index-discovery -b</code> (search.resourceid becomes an integer!)
<ul>
<li>If I induce an indexing by touching <code>dspace/solr/search/conf/reindex.flag</code> the search.resourceid are all UUIDs…</li>
</ul>
</li>
<li>Speaking of database stuff, there was a performance-related update for the <ahref="https://github.com/DSpace/DSpace/pull/1791/">indexes that we used in DSpace 5</a>
<ul>
<li>We might want to <ahref="https://github.com/DSpace/DSpace/pull/1792">apply it in DSpace 6</a>, as it was never merged to 6.x, but it helped with the performance of <code>/submissions</code> in XMLUI for us in <ahref="/cgspace-notes/2018-03/">2018-03</a></li>
<li>The indexing issue I was having yesterday seems to only present itself the first time a new installation is running DSpace 6
<ul>
<li>Once the indexing induced by touching <code>dspace/solr/search/conf/reindex.flag</code> has finished, subsequent manual invocations of <code>dspace index-discovery -b</code> work as expected</li>
<li>Nevertheless, I sent a message to the dspace-tech mailing list describing the issue to see if anyone has any comments</li>
<li>I am seeing that the number of important commits on the unreleased DSpace 6.4 are really numerous and it might be better for us to target that version
<ul>
<li>I did a simple test and it’s easy to rebase my current 6.3 branch on top of the upstream <code>dspace-6_x</code> branch:</li>
</ul>
</li>
</ul>
<pre><code>$ git checkout -b 6_x-dev64 6_x-dev
$ git rebase -i upstream/dspace-6_x
</code></pre><ul>
<li>I finally understand why our themes show all the “Browse by” buttons on community and collection pages in DSpace 6.x
<ul>
<li>The code in <code>./dspace-xmlui/src/main/java/org/dspace/app/xmlui/aspect/browseArtifacts/CommunityBrowse.java</code> iterates over all the browse indexes and prints them when it is called</li>
<li>The XMLUI theme code in <code>dspace/modules/xmlui-mirage2/src/main/webapp/themes/0_CGIAR/xsl/preprocess/browse.xsl</code> calls the template because the id of the div matches “aspect.browseArtifacts.CommunityBrowse.list.community-browse”</li>
<li>I checked the DRI of a community page on my local 6.x and DSpace Test 5.x by appending <code>?XML</code> to the URL and I see the ID is missing on DSpace 5.x</li>
<li>The issue is the same with the ordering of the “My Account” link, but in Navigation.java</li>
<li>I tried modifying <code>preprocess/browse.xsl</code> but it always ends up printing some default list of browse by links…</li>
<li>I’m starting to wonder if Atmire’s modules somehow override this, as I don’t see how <code>CommunityBrowse.java</code> can behave like ours on DSpace 5.x unless they have overridden it (as the open source code is the same in 5.x and 6.x)</li>
<li>At least the “account” link in the sidebar is overridden in our 5.x branch because Atmire copied a modified <code>Navigation.java</code> to the local xmlui modules folder… so that explains that (and it’s easy to replicate in 6.x)</li>
<li>Checking out the DSpace 6.x REST API query client
<ul>
<li>There is a <ahref="https://terrywbrady.github.io/restReportTutorial/intro">tutorial</a> that explains how it works and I see it is very powerful because you can export a CSV of results in order to fix and re-upload them with batch import!</li>
<li>Custom queries can be added in <code>dspace-rest/src/main/webapp/static/reports/restQueryReport.js</code></li>
</ul>
</li>
<li>I noticed two new bots in the logs with the following user agents:
<li><code>magpie-crawler/1.1 (U; Linux amd64; en-GB; +http://www.brandwatch.net)</code></li>
</ul>
</li>
<li>I filed an <ahref="https://github.com/atmire/COUNTER-Robots/issues/30">issue to add Jersey to the COUNTER-Robots</a> list</li>
<li>Peter noticed that the statlets on community, collection, and item pages aren’t working on CGSpace
<ul>
<li>I thought it might be related to the fact that the yearly sharding didn’t complete successfully this year so the <code>statistics-2019</code> core is empty</li>
<li>I removed the <code>statistics-2019</code> core and had to restart Tomcat like six times before all cores would load properly (ugh!!!!)</li>
<li>After that the statlets were working properly…</li>
</ul>
</li>
<li>Run all system updates on DSpace Test (linode19) and restart it</li>
dspace63=# DELETE FROM schema_version WHERE version IN ('5.0.2015.01.27', '5.6.2015.12.03.2', '5.6.2016.08.08', '5.0.2017.04.28', '5.0.2017.09.25', '5.8.2015.12.03.3');
dspace63=# DROP VIEW eperson_metadata;
dspace63=# \q
</code></pre><ul>
<li>I purged ~33,000 hits from the “Jersey/2.6” bot in CGSpace’s statistics using my <code>check-spider-hits.sh</code> script:</li>
$ for year in 2018 2017 2016 2015; do ./check-spider-hits.sh -d -p -f /tmp/jersey -s "statistics-${year}" -u http://localhost:8081/solr; done
<li>I noticed another user agen in the logs that we should add to the list:</li>
</ul>
<pre><code>ReactorNetty/0.9.2.RELEASE
</code></pre><ul>
<li>I made <ahref="https://github.com/atmire/COUNTER-Robots/issues/31">an issue on the COUNTER-Robots repository</a></li>
<li>I found a <ahref="https://github.com/freedev/solr-import-export-json">nice tool for exporting and importing Solr records</a> and it seems to workfor exporting our 2019 stats from the large statistics core!</li>
<li>Using flame graphs with java: <ahref="https://netflixtechblog.com/java-in-flames-e763b3d32166">https://netflixtechblog.com/java-in-flames-e763b3d32166</a></li>
<li>Fantastic wrapper scripts for doing perf on Java processes: <ahref="https://github.com/jvm-profiling-tools/perf-map-agent">https://github.com/jvm-profiling-tools/perf-map-agent</a></li>
<li>This weekend I did a lot more testing of indexing performance with our DSpace 5.8 branch, vanilla DSpace 5.10, and vanilla DSpace 6.4-SNAPSHOT:</li>
</ul>
<pre><code># CGSpace 5.8
schedtool -D -e ~/dspace/bin/dspace index-discovery -b 385.72s user 131.16s system 19% cpu 43:21.18 total
schedtool -D -e ~/dspace/bin/dspace index-discovery -b 382.95s user 127.31s system 20% cpu 42:10.07 total
schedtool -D -e ~/dspace/bin/dspace index-discovery -b 368.56s user 143.97s system 20% cpu 42:22.66 total
schedtool -D -e ~/dspace/bin/dspace index-discovery -b 360.09s user 104.03s system 19% cpu 39:24.41 total
# Vanilla DSpace 5.10
schedtool -D -e ~/dspace510/bin/dspace index-discovery -b 236.19s user 59.70s system 3% cpu 2:03:31.14 total
schedtool -D -e ~/dspace510/bin/dspace index-discovery -b 232.41s user 50.38s system 3% cpu 2:04:16.00 total
# Vanilla DSpace 6.4-SNAPSHOT
schedtool -D -e ~/dspace63/bin/dspace index-discovery -b 5112.96s user 127.80s system 40% cpu 3:36:53.98 total
schedtool -D -e ~/dspace63/bin/dspace index-discovery -b 5112.96s user 127.80s system 40% cpu 3:21:0.0 total
</code></pre><ul>
<li>I generated better flame graphs for the DSpace indexing process by using <code>perf-record-stack</code> and filtering out the java process:</li>
