Add notes for 2018-04-29

content/posts/2018-04.md

@@ -506,3 +506,28 @@ org.apache.tomcat.jdbc.pool.PoolExhaustedException: [localhost-startStop-2] Time
 $ psql dspacetest -c 'alter user dspacetest superuser;'
 $ pg_restore -O -U dspacetest -d dspacetest -W -h localhost /tmp/dspace_2018-04-18.backup
 ```
+
+- There's another issue with Tomcat in Ubuntu 18.04:
+
+```
+25-Apr-2018 13:26:21.493 SEVERE [http-nio-127.0.0.1-8443-exec-1] org.apache.coyote.AbstractProtocol$ConnectionHandler.process Error reading request, ignored
+ java.lang.NoSuchMethodError: java.nio.ByteBuffer.position(I)Ljava/nio/ByteBuffer;
+        at org.apache.coyote.http11.Http11InputBuffer.init(Http11InputBuffer.java:688)
+        at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:672)
+        at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
+        at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:790)
+        at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1459)
+        at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
+        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
+        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
+        at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
+        at java.lang.Thread.run(Thread.java:748)
+```
+
+- There's a [Debian bug about this from a few weeks ago](https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=895866)
+- Apparently Tomcat was compiled with Java 9, so doesn't work with Java 8
+
+## 2018-04-29
+
+- DSpace Test crashed again, looks like memory issues again
+- JVM heap size was last increased to 6144m but the system only has 8GB total so there's not much we can do here other than get a bigger Linode instance or remove the massive Solr Statistics data