Hello all,
we are running Tomcat 7 on Amazon EC2:
Server version: Apache Tomcat/7.0.22
Server built: Sep 27 2011 09:40:50
Server number: 7.0.22.0
OS Name: Linux
OS Version: 2.6.34.7-56.40.amzn1.i686
Architecture: i386
JVM Version: 1.7.0_03-b04
And get following exception on slow queries:
[catalina-exec-18] 04-02 10:27:11 ERROR TransactionInterceptor:414 -
Application exception overridden by rollback exception
java.lang.NullPointerException
at
org.apache.tomcat.jdbc.pool.interceptor.SlowQueryReport.reportFailedQuery(SlowQueryReport.java:86)
at
org.apache.tomcat.jdbc.pool.interceptor.AbstractQueryReport$StatementProxy.invoke(AbstractQueryReport.java:237)
I wasn't able to google for a solution/bugfix therefore I would like
to ask the Tomcat community for help on this issue. Is this a known
bug?
When looking at the source code:
85: QueryStats qs = this.getQueryStats(sql);
86: qs.failure(delta, now);
It looks like getQueryStats(sql) returned null and indeed it does so
on at leas one ocassion:
protected QueryStats getQueryStats(String sql) {
if (sql==null) sql = "";
ConcurrentHashMap<String,QueryStats> queries =
SlowQueryReport.this.queries;
>> if (queries==null) return null;
However, non of the uses of getQueryStats() in SlowQueryReport guard
against this null. It seems to be a bug.
--
Regards,
Tomasz Kowalczewski
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