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Date: Tue, 29 Jan 2008 05:21:34 -0800 (PST)
From: =?utf-8?Q?J=C3=B8rgen_L=C3=B8land_=28JIRA=29?= <jira@apache.org>
To: derby-dev@db.apache.org
Subject: [jira] Commented: (DERBY-3361) Specifying a non-existant slaveHost
 for startSlave seemingly succeeds in starting slave mode.
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    [ https://issues.apache.org/jira/browse/DERBY-3361?page=3Dcom.atlassian=
.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=3D1256=
3513#action_12563513 ]=20

J=C3=B8rgen L=C3=B8land commented on DERBY-3361:
--------------------------------------

I think that's a good suggestion, =C3=98ystein. Since the thread that boots=
 store and starts replication functionality cannot contact SlaveDatabase [1=
], I think the best way to do this is to let the client thread pull the inf=
ormation from the SlaveController.

An implication of this solution is, of course, that the connection attempt =
trying to start the slave will hang until the master has been started. I th=
ink that will be acceptable.

[1] Until the client thread leaves SlaveDatabase#boot, the Database service=
 cannot be found by calling Monitor.findService

> Specifying a non-existant slaveHost for startSlave seemingly succeeds in =
starting slave mode.
> -------------------------------------------------------------------------=
--------------------
>
>                 Key: DERBY-3361
>                 URL: https://issues.apache.org/jira/browse/DERBY-3361
>             Project: Derby
>          Issue Type: Bug
>          Components: Replication
>    Affects Versions: 10.4.0.0
>         Environment: Trunk (615841) + patch DERBY-3205/stopSlave_v1b=20
>            Reporter: Ole Solberg
>            Assignee: J=C3=B8rgen L=C3=B8land
>
> Specifying a non-existant slaveHost for startSlave seemingly succeeds in =
starting slave mode.
> -------------------------------------------------------------------------=
----------------------------------------------
>  CONNECT 'jdbc:derby://atum11:9999/test;startSlave=3Dtrue;slaveHost=3DnoS=
uchHost;slavePort=3D8989';
> ERROR XRE08: DERBY SQL error: SQLCODE: -1, SQLSTATE: XRE08, SQLERRMC: Rep=
lication slave mode started successfully for database 'test'. Connection re=
fused because the database is in replication slave mode.=20
> Slave derby.log shows a NPE:
> --------------------------------------
> 2008-01-29 11:52:40.050 GMT:
>  Booting Derby version The Apache Software Foundation - Apache Derby - 10=
.4.0.0 alpha - (615841M): instance c013800d-0117-c563-d051-000003bf6570
> on database directory /export/home/tmp/os136789/Replication_common_Trunk/=
slave/test =20
> Database Class Loader started - derby.database.classpath=3D''
> 2008-01-29 11:52:40.308 GMT:
> Shutting down instance c013800d-0117-c563-d051-000003bf6570
> ----------------------------------------------------------------
> ----------------------------------------------------------------
> 2008-01-29 11:52:40.320 GMT:
>  Booting Derby version The Apache Software Foundation - Apache Derby - 10=
.4.0.0 alpha - (615841M): instance a816c00e-0117-c563-d051-000003bf6570
> on database directory /export/home/tmp/os136789/Replication_common_Trunk/=
slave/test =20
> 2008-01-29 11:52:40.814 GMT Thread[DRDAConnThread_2,5,main] Cleanup actio=
n starting
> ERROR XRE08: Replication slave mode started successfully for database 'te=
st'. Connection refused because the database is in replication slave mode.=
=20
> =09at org.apache.derby.iapi.error.StandardException.newException(Standard=
Exception.java:290)
> =09at org.apache.derby.impl.jdbc.EmbedConnection.<init>(EmbedConnection.j=
ava:423)
> =09at org.apache.derby.impl.jdbc.EmbedConnection30.<init>(EmbedConnection=
30.java:73)
> =09at org.apache.derby.impl.jdbc.EmbedConnection40.<init>(EmbedConnection=
40.java:54)
> =09at org.apache.derby.jdbc.Driver40.getNewEmbedConnection(Driver40.java:=
68)
> =09at org.apache.derby.jdbc.InternalDriver.connect(InternalDriver.java:21=
1)
> =09at org.apache.derby.jdbc.AutoloadedDriver.connect(AutoloadedDriver.jav=
a:119)
> =09at org.apache.derby.impl.drda.Database.makeConnection(Database.java:23=
4)
> =09at org.apache.derby.impl.drda.DRDAConnThread.getConnFromDatabaseName(D=
RDAConnThread.java:1346)
> =09at org.apache.derby.impl.drda.DRDAConnThread.verifyUserIdPassword(DRDA=
ConnThread.java:1296)
> =09at org.apache.derby.impl.drda.DRDAConnThread.parseSECCHK(DRDAConnThrea=
d.java:3033)
> =09at org.apache.derby.impl.drda.DRDAConnThread.parseDRDAConnection(DRDAC=
onnThread.java:1090)
> =09at org.apache.derby.impl.drda.DRDAConnThread.processCommands(DRDAConnT=
hread.java:932)
> =09at org.apache.derby.impl.drda.DRDAConnThread.run(DRDAConnThread.java:2=
77)
> Cleanup action completed
> 2008-01-29 11:52:40.816 GMT Thread[DRDAConnThread_2,5,main] Cleanup actio=
n starting
> ERROR XRE08: Replication slave mode started successfully for database 'te=
st'. Connection refused because the database is in replication slave mode.=
=20
> =09at org.apache.derby.iapi.error.StandardException.newException(Standard=
Exception.java:290)
> =09at org.apache.derby.impl.jdbc.EmbedConnection.<init>(EmbedConnection.j=
ava:423)
> =09at org.apache.derby.impl.jdbc.EmbedConnection30.<init>(EmbedConnection=
30.java:73)
> =09at org.apache.derby.impl.jdbc.EmbedConnection40.<init>(EmbedConnection=
40.java:54)
> =09at org.apache.derby.jdbc.Driver40.getNewEmbedConnection(Driver40.java:=
68)
> =09at org.apache.derby.jdbc.InternalDriver.connect(InternalDriver.java:21=
1)
> =09at org.apache.derby.jdbc.AutoloadedDriver.connect(AutoloadedDriver.jav=
a:119)
> =09at org.apache.derby.impl.drda.Database.makeConnection(Database.java:23=
4)
> =09at org.apache.derby.impl.drda.DRDAConnThread.getConnFromDatabaseName(D=
RDAConnThread.java:1346)
> =09at org.apache.derby.impl.drda.DRDAConnThread.verifyUserIdPassword(DRDA=
ConnThread.java:1296)
> =09at org.apache.derby.impl.drda.DRDAConnThread.parseSECCHK(DRDAConnThrea=
d.java:3033)
> =09at org.apache.derby.impl.drda.DRDAConnThread.parseDRDAConnection(DRDAC=
onnThread.java:1090)
> =09at org.apache.derby.impl.drda.DRDAConnThread.processCommands(DRDAConnT=
hread.java:932)
> =09at org.apache.derby.impl.drda.DRDAConnThread.run(DRDAConnThread.java:2=
77)
> Cleanup action completed
> 2008-01-29 11:52:40.816 GMT Thread[DRDAConnThread_2,5,main] (DATABASE =3D=
 test), (DRDAID =3D {1}), Replication slave mode started successfully for d=
atabase 'test'. Connection refused because the database is in replication s=
lave mode.=20
> New exception raised during cleanup null
> java.lang.NullPointerException
> =09at org.apache.derby.impl.services.replication.slave.SlaveController.st=
opSlave(SlaveController.java:259)
> =09at org.apache.derby.impl.services.replication.slave.SlaveController.st=
opSlave(SlaveController.java:287)
> =09at org.apache.derby.impl.db.SlaveDatabase.stop(SlaveDatabase.java:149)
> =09at org.apache.derby.impl.services.monitor.TopService.stop(TopService.j=
ava:405)
> =09at org.apache.derby.impl.services.monitor.TopService.shutdown(TopServi=
ce.java:349)
> =09at org.apache.derby.impl.services.monitor.BaseMonitor.shutdown(BaseMon=
itor.java:235)
> =09at org.apache.derby.impl.db.DatabaseContextImpl.cleanupOnError(Databas=
eContextImpl.java:60)
> =09at org.apache.derby.iapi.services.context.ContextManager.cleanupOnErro=
r(ContextManager.java:330)
> =09at org.apache.derby.impl.jdbc.TransactionResourceImpl.cleanupOnError(T=
ransactionResourceImpl.java:419)
> =09at org.apache.derby.impl.jdbc.TransactionResourceImpl.handleException(=
TransactionResourceImpl.java:337)
> =09at org.apache.derby.impl.jdbc.EmbedConnection.handleException(EmbedCon=
nection.java:1859)
> =09at org.apache.derby.impl.jdbc.EmbedConnection.handleStopReplicationSla=
ve(EmbedConnection.java:747)
> =09at org.apache.derby.impl.jdbc.EmbedConnection.<init>(EmbedConnection.j=
ava:296)
> =09at org.apache.derby.impl.jdbc.EmbedConnection30.<init>(EmbedConnection=
30.java:73)
> =09at org.apache.derby.impl.jdbc.EmbedConnection40.<init>(EmbedConnection=
40.java:54)
> =09at org.apache.derby.jdbc.Driver40.getNewEmbedConnection(Driver40.java:=
68)
> =09at org.apache.derby.jdbc.InternalDriver.connect(InternalDriver.java:21=
1)
> =09at org.apache.derby.jdbc.AutoloadedDriver.connect(AutoloadedDriver.jav=
a:119)
> =09at org.apache.derby.impl.db.SlaveDatabase.handleShutdown(SlaveDatabase=
.java:317)
> =09at org.apache.derby.impl.db.SlaveDatabase.access$200(SlaveDatabase.jav=
a:73)
> =09at org.apache.derby.impl.db.SlaveDatabase$SlaveDatabaseBootThread.run(=
SlaveDatabase.java:293)
> =09at java.lang.Thread.run(Thread.java:619)
> Cleanup action completed

--=20
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