I use openfire 3.9.3. and monitoring service 1.4.2. It repeats the errors below. I reinstalled the plugin and didn't resolve the problem.
My environment here:
| Java Version: | 1.8.0_05 Oracle Corporation -- OpenJDK 64-Bit Server VM |
| Appserver: | jetty/7.x.y-SNAPSHOT |
| OS / Hardware: | FreeBSD 9.3/ amd64 |
| Database and Version: | PostgreSQL 9.3.4 |
| JDBC Driver: | PostgreSQL Native Driver |
| JDBC Driver Version: | PostgreSQL 9.3 JDBC4 (build 1101) |
| DB Connection URL: | jdbc:postgresql://localhost:5432/postgres |
| DB User: | openfire |
| Transaction Support: | Yes |
| Transaction Isolation Level: | TRANSACTION_READ_COMMITTED |
| Supports multiple connections open at once: | Yes |
The errors log here:
2014.10.01 04:50:49 org.jivesoftware.openfire.reporting.stats.StatsEngine - Error sampling for statistic conversations
java.io.IOException: The underlying backend has no canonical path
at org.jrobin.core.RrdDb.getCanonicalPath(Unknown Source)
at org.jrobin.core.Header.validateHeader(Unknown Source)
at org.jrobin.core.RrdDb.<init>(Unknown Source)
at org.jrobin.core.RrdDb.<init>(Unknown Source)
at org.jivesoftware.openfire.reporting.stats.StatsEngine$SampleTask.run(StatsEngin e.java:362)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
2014.10.01 04:51:30 org.jivesoftware.openfire.reporting.stats.StatsEngine - Error sampling for statistic sessions
java.io.IOException: The underlying backend has no canonical path
at org.jrobin.core.RrdDb.getCanonicalPath(Unknown Source)
at org.jrobin.core.Header.validateHeader(Unknown Source)
at org.jrobin.core.RrdDb.<init>(Unknown Source)
at org.jrobin.core.RrdDb.<init>(Unknown Source)
at org.jivesoftware.openfire.reporting.stats.StatsEngine$SampleTask.run(StatsEngin e.java:362)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
2014.10.01 04:51:35 org.jivesoftware.openfire.reporting.stats.StatsEngine - Error sampling for statistic muc_occupants
java.io.IOException: The underlying backend has no canonical path
at org.jrobin.core.RrdDb.getCanonicalPath(Unknown Source)
at org.jrobin.core.Header.validateHeader(Unknown Source)
at org.jrobin.core.RrdDb.<init>(Unknown Source)
at org.jrobin.core.RrdDb.<init>(Unknown Source)
at org.jivesoftware.openfire.reporting.stats.StatsEngine$SampleTask.run(StatsEngin e.java:362)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)