top button
Flag Notify
    Connect to us
      Site Registration

Site Registration

Does hot swapped compiled class remain in Tomcat after restart?

+3 votes
95 views

In case I compile a Java file in my IDE, (i.e. IntelliJ) and Hot Swap it to remote server (Tomcat, in that case.)

If I restart Tomcat - will it use the "new" compiled class ?

posted Apr 18, 2016 by Karthick.c

Looking for an answer?  Promote on:
Facebook Share Button Twitter Share Button LinkedIn Share Button

Similar Questions
+1 vote

I am facing an invalid jar index exception in both tomcat 5.5.x and 7.0.39 . After some investigation , we figured out this is because of class loading in tomcat which uses index.list file in jar files. I have two jars with same package names but classes in those package are different. Since the package name are defined or mentioned in the index.list file of every jar for some reason tomcat is showing me an invalid jar index exception even if try to load a simple index.jsp.

0 votes

I am using Tomcat version 7.0.63.
I have registered the dbconnection pool with MBeanServer.
Is there a way to make those methods hot setting? What I mean by this is, for example if I change statement cache size in the jconsole, it should take effect immediately.

Any help is greatly appreciated.

+2 votes

Did any one got these error before, please help

ERROR org.apache.hadoop.hdfs.server.datanode.DataNode: xxxxx.com:50010:DataXceiver error processing WRITE_BLOCK operation  src: /xxxxxxxx:39000 dst: /xxxxxx:50010

java.lang.NullPointerException
at org.apache.hadoop.hdfs.server.datanode.BlockReceiver.(BlockReceiver.java:167)
at org.apache.hadoop.hdfs.server.datanode.DataXceiver.writeBlock(DataXceiver.java:604)
at org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.opWriteBlock(Receiver.java:126)
at org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.processOp(Receiver.java:72)
at org.apache.hadoop.hdfs.server.datanode.DataXceiver.run(DataXceiver.java:225)
at java.lang.Thread.run(Thread.java:745)
2015-01-11 04:13:21,846 WARN org.apache.hadoop.hdfs.server.datanode.DataNode: IOException in offerService
WARN org.apache.hadoop.hdfs.server.datanode.DataNode: Slow BlockReceiver write packet to mirror took 657ms (threshold=300ms)
...