[JBoss JIRA] Created: (JBCLUSTER-186) Implementations of Invoker should implement equals as an equality check rather than relying on Object.equals, this is important for cluster fail-over support
by Scott Marlow (JIRA)
Implementations of Invoker should implement equals as an equality check rather than relying on Object.equals, this is important for cluster fail-over support
-------------------------------------------------------------------------------------------------------------------------------------------------------------
Key: JBCLUSTER-186
URL: http://jira.jboss.com/jira/browse/JBCLUSTER-186
Project: JBoss Clustering
Issue Type: Bug
Security Level: Public (Everyone can see)
Environment: JBoss as 4.0.4, although this seems to happen in 4.5 + 5.x as well.
Reporter: Scott Marlow
Assigned To: Scott Marlow
Priority: Minor
Part of how JRMPInvokerProxyHA handles fail-over includes removing the reference to the node that left the cluster. However, the dead node is not removed as an equality check is not implemented by certain Invoker implementations.
The relevant code in JRMPInvokerProxyHA is
protected void removeDeadTarget(Object target)
{
if (this.familyClusterInfo != null)
this.familyClusterInfo.removeDeadTarget (target);
}
The code in familyClusterInfo is:
public ArrayList removeDeadTarget(Object target)
{
synchronized (this)
{
ArrayList tmp = (ArrayList) targets.clone();
tmp.remove (target);
this.targets = tmp;
this.isViewMembersInSyncWithViewId = false;
}
return this.targets;
}
Since, we didn't include an equals test in many of the different Invoker implementations, the above "tmp.remove(target)" operation fails. The reason for the failure is due to the "targets" ArrayList changing on every invocation (to reflect the current cluster server membership list), a new "targets" is created (so of course comparing references later will not work.)
A similar problem occurs with the EJB2 load balancers after a cluster membership changes.
I think that these issues will be solved by implementing an equals test in the different invokers that can handle equality testing.
PooledInvokerProxy should implement equals based on ServerAddress.
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12 years, 4 months
[JBoss JIRA] Created: (JGRP-371) TCP_NIO with SSL
by Bela Ban (JIRA)
TCP_NIO with SSL
----------------
Key: JGRP-371
URL: http://jira.jboss.com/jira/browse/JGRP-371
Project: JGroups
Issue Type: Feature Request
Affects Versions: 2.4
Reporter: Bela Ban
Assigned To: Bela Ban
Fix For: 2.5
Attachments: ssl-nio.jar
>From Hal Hildebrand:
Attached are the sources to allow a new protocol stack which uses SSL over
NIO. This protocol stack element provides security and authentication
(using client side authentication) for a JGroups TCP stack using NIO.
This required two minor modifications in the ConnectionTableNIO class.
These modifications allow one to subclass to create a connection table which
uses SSL for the connections. Finally, there is a new protocol stack
element, SSL_NIO, which one can add to a stack to make use of it.
Regardless of whether this makes it into the codeline of JGroups, it would
be nice to have the changes to ConnectionTableNIO make it into the mainline,
as I currently have to overwrite the original class to easily implement this
- the last thing I want to do is fork ConnectionTableNIO ;) I'd rather just
subclass it. The mods are simple and innocuous (marked with "HSH").
Right now, the SSL_NIO needs to be configured with an SSLSocketFactory. I
didn't bother with integrating with the normal JGroups mechanism using
properties from the configuration because I consider it inherently insecure
to ensconce my passwords in configuration files. But the changes to enable
this are straight forward. Currently, to configure the factory for the
protocol layer, do something like the following before connecting your
channel:
// Construct your Jchannel
JChannel jchannel = ...
// Access your protocol stack
ProtocolStack protocolStack = jchannel.getProtocolStack();
// Retrieve the SSL_NIO protocol layer
SSL_NIO protocol = (SSL_NIO) protocolStack.findProtocol("SSL_NIO");
// Create your SSLSocketFactory
SSLSocketFactory socketFactory = ....
// Set up the protocol
protocol. SetSocketFactory(socketFactory);
// Connect your channel
jchannel.connnect("my-group");
Cheers.
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12 years, 4 months
[JBoss JIRA] Created: (HIBERNATE-54) problems w/ column names beginning with '_' (underscore) w/ apache derby database
by bugra uytun (JIRA)
problems w/ column names beginning with '_' (underscore) w/ apache derby database
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Key: HIBERNATE-54
URL: http://jira.jboss.com/jira/browse/HIBERNATE-54
Project: Hibernate
Issue Type: Bug
Environment: windows xp, java 1.5.0_09, eclispe 3.2.1, hibernate 3.2.1, derby 10.2.2.0, hibernate tools 3.2 beta8
Reporter: bugra uytun
Assigned To: Steve Ebersole
derby has problems with column names beginning with underscore, see also http://db.apache.org/derby/docs/10.1/ref/crefsqlj1003454.html
therefore such column names should be between double quotation marks (notice that double quotation marks also sets the case sensitivity on column names.)
but hibernate translates a HQL statement like this "from table1 t where t.id = '1'" to something like:
select table1_.id as id4, table1_._colname1 as column27_4_ schema1.table1 table1_ where table1_.id = '1'
but because of the columns that are beginning with an underscore the translation should be:
select table1_."id" as id4, table1_."_colname1" as column27_4_ schema1."table1" table1_ where table1_."id" = '1'
the errors i got are:
DEBUG [JDBCExceptionReporter]: could not execute query [<translated sql statement>]
ERROR 42X01: Syntax error: Encountered "_" at line 1, column 987.
at org.apache.derby.iapi.error.StandardException.newException(Unknown Source)
at org.apache.derby.impl.sql.compile.ParserImpl.parseStatement(Unknown Source)
at org.apache.derby.impl.sql.GenericStatement.prepMinion(Unknown Source)
at org.apache.derby.impl.sql.GenericStatement.prepare(Unknown Source)
at org.apache.derby.impl.sql.conn.GenericLanguageConnectionContext.prepareInternalStatement(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedPreparedStatement.<init>(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedPreparedStatement20.<init>(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedPreparedStatement30.<init>(Unknown Source)
at org.apache.derby.jdbc.Driver30.newEmbedPreparedStatement(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedConnection.prepareStatement(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedConnection.prepareStatement(Unknown Source)
at org.hibernate.jdbc.AbstractBatcher.getPreparedStatement(AbstractBatcher.java:497)
at org.hibernate.jdbc.AbstractBatcher.getPreparedStatement(AbstractBatcher.java:415)
at org.hibernate.jdbc.AbstractBatcher.prepareQueryStatement(AbstractBatcher.java:139)
at org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1538)
at org.hibernate.loader.Loader.doQuery(Loader.java:661)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:224)
at org.hibernate.loader.Loader.doList(Loader.java:2211)
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2095)
at org.hibernate.loader.Loader.list(Loader.java:2090)
at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:388)
at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:338)
at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:172)
at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1121)
at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
at <mypackage>.MyHibernate.main(MyHibernate.java:13)
WARN main org.hibernate.util.JDBCExceptionReporter - SQL Error: 20000, SQLState: 42X01
ERROR main org.hibernate.util.JDBCExceptionReporter - Syntax error: Encountered "_" at line 1, column 987.
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12 years, 7 months
[JBoss JIRA] Created: (JBWEB-72) html page and jsp are not display with in a Context defined in server.xml.
by Jean-Frederic Clere (JIRA)
html page and jsp are not display with in a Context defined in server.xml.
--------------------------------------------------------------------------
Key: JBWEB-72
URL: http://jira.jboss.com/jira/browse/JBWEB-72
Project: JBoss Web
Issue Type: Bug
Security Level: Public (Everyone can see)
Components: Core
Affects Versions: JBoss Web Server 1.0.1 GA
Environment: any
Reporter: Jean-Frederic Clere
Assigned To: Jean-Frederic Clere
Priority: Minor
When using a Context definition in server.xml like:
<Context path="/test" docBase="/home/jfclere/TMP/MYAPP" />
The jsp and html pages of /home/jfclere/TMP/MYAPP are not displayed (404 is returned).
That is because the conf/web.xml is not used to set the defaults when the <Context/> is processed.
DefaultWebXml is set in TomcatDeployer and that is after the <Context/> needs it. The default value is used but it is set to "web.xml".
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12 years, 8 months
[JBoss JIRA] Created: (JBRULES-680) Support real-time problem modification during solving with utils for the single thread subsystem
by Geoffrey De Smet (JIRA)
Support real-time problem modification during solving with utils for the single thread subsystem
------------------------------------------------------------------------------------------------
Key: JBRULES-680
URL: http://jira.jboss.com/jira/browse/JBRULES-680
Project: JBoss Rules
Issue Type: Feature Request
Security Level: Public (Everyone can see)
Components: Solver
Reporter: Geoffrey De Smet
Assigned To: Geoffrey De Smet
Rete/Drools is single threaded, and so is the current implementation of the localsearchsolver,
but this single thread subsystem should be documented
and utils should be provided to allow for real-time problem modification
A simple way would be to use a producer-consumer pattern with a non blocking queue which holds "problem moves".
Each step the problem moves could be used.
Problems:
- bestsolutionrecalled also needs it's score adjusted. so we'll need a 2th working memory:
-- EITHER temporary, just for the problem move (or set of problem moves)
-- EITHER all the time, but then we'd have to hold a chain of moves, some of which might not be doable at the end
- cached selectors must be notified of refreshing their cache
- solution cloning normally doesn't clone the problem facts, just the proposed solution references. Do we need a full clone now?
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12 years, 9 months