[infinispan-issues] [JBoss JIRA] Commented: (ISPN-1086) IndexOutOfBoundsException for DistributedExecutorService with a single node cache
[
https://issues.jboss.org/browse/ISPN-1086?page=com.atlassian.jira.plugin....
]
Ming Fai Ma commented on ISPN-1086:
-----------------------------------
i patched my local infinispan to make
{code}
public void execute(Runnable command) {
...
Address randomClusterMemberOtherThanSelfAddress =
randomClusterMemberOtherThanSelf();
if (randomClusterMemberOtherThanSelfAddress!=null)
executeFuture(randomClusterMemberOtherThanSelf(), cmd);
...
{code}
and
{code}
protected Address randomClusterMemberOtherThanSelf() {
List<Address> l = randomClusterMembers(1);
return l!=null && l.size()>0?l.get(0):null;
}
{code}
The IndexOutOfBoundsException won't be thrown anymore but the task still won't
run. the log say:
2011-05-06 01:14:45,980 WARN [DefaultExecutorService ] ISPN00008: Can not
select 1 random members for []
the same DistributedCallable does work if i use submitEverywhere
so my question is, should the submit() method just send the local node if there is only
one node in the cluster?
IndexOutOfBoundsException for DistributedExecutorService with a
single node cache
---------------------------------------------------------------------------------
Key: ISPN-1086
URL: https://issues.jboss.org/browse/ISPN-1086
Project: Infinispan
Issue Type: Bug
Components: Distributed Cache
Affects Versions: 5.0.0.CR1
Reporter: Ming Fai Ma
Assignee: Manik Surtani
Priority: Minor
I'm just trying the distributed executor in 5.0.0.CR1. My first test is to start a
cache with one member only (but with clustered cache configuration as it is required).
When I submitted a runnable in to a DistributedExecutorService with a single node, it got
an error:
{code}
java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
at java.util.ArrayList.RangeCheck(ArrayList.java:547)
at java.util.ArrayList.get(ArrayList.java:322)
at
org.infinispan.distexec.DefaultExecutorService.randomClusterMemberOtherThanSelf(DefaultExecutorService.java:451)
at
org.infinispan.distexec.DefaultExecutorService.execute(DefaultExecutorService.java:278)
{code}
there is only one member and no "cluster member other than self". Should the
single node use case be supported? I suppose there is no harm to allow user to use the
executor in a single node, for example, for unit testing.
if this use case is not supported, I suggest to throw an exception with better
explanation
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