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Date: Tue, 14 Apr 2009 00:23:14 -0700 (PDT)
From: "V.Narayanan (JIRA)" <jira@apache.org>
To: derby-dev@db.apache.org
Subject: [jira] Commented: (DERBY-3896) Assert failure in
 LogicalUndoOperation.doMe() when starting slave with uncommitted
 transactions on the master
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    [ https://issues.apache.org/jira/browse/DERBY-3896?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12698680#action_12698680 ] 

V.Narayanan commented on DERBY-3896:
------------------------------------

The decision on when to log ship, is taken everytime a log buffer element becomes full.
When a log buffer element becomes full, this event is communicated to the log shipper
via the master controller. The log shipper then takes a decision based on the fill information
obtained from the log buffer

I think Knut is right in saying that log shipping does not happen when the freeze happens,
but I am not sure it is related to the log switch not happening.

I think I am going to try triggering the log shipping inside freezePersistentStore() of LogToFile and
see what happens!

> Assert failure in LogicalUndoOperation.doMe() when starting slave with uncommitted transactions on the master
> -------------------------------------------------------------------------------------------------------------
>
>                 Key: DERBY-3896
>                 URL: https://issues.apache.org/jira/browse/DERBY-3896
>             Project: Derby
>          Issue Type: Bug
>          Components: Replication
>    Affects Versions: 10.4.1.3, 10.5.0.0
>         Environment: Solaris Express Community Edition snv_99 X86
> Derby trunk, svn revision 701061, sane build
> java version "1.6.0_07"
> Java(TM) Platform, Standard Edition for Business (build 1.6.0_07-b06)
> Java HotSpot(TM) Server VM (build 10.0-b23, mixed mode)
>            Reporter: Knut Anders Hatlen
>
> I created and froze the master database like this:
> /tmp/master % java -jar /code/derby/trunk1/jars/sane/derbyrun.jar ij
> ij version 10.5
> ij> connect 'jdbc:derby:db;create=true';
> ij> autocommit off;
> ij> create table t1(x int);
> 0 rows inserted/updated/deleted
> ij> insert into t1 values 1,2,3,4;
> 4 rows inserted/updated/deleted
> ij> connect 'jdbc:derby:db';
> ij(CONNECTION1)> call syscs_util.syscs_freeze_database();
> 0 rows inserted/updated/deleted
> ij(CONNECTION1)> 
> Then in another terminal window I copied the database with "cp -rp" and booted the copy as a slave:
> /tmp/slave % java -jar /code/derby/trunk1/jars/sane/derbyrun.jar ij
> ij version 10.5
> ij> connect 'jdbc:derby:db;startSlave=true';
> org.apache.derby.shared.common.sanity.AssertFailure: ASSERT FAILED
>         at org.apache.derby.shared.common.sanity.SanityManager.ASSERT(SanityManager.java:98)
>         at org.apache.derby.impl.store.raw.data.LogicalUndoOperation.doMe(LogicalUndoOperation.java:174)
>         at org.apache.derby.impl.store.raw.log.FileLogger.logAndUndo(FileLogger.java:533)
>         at org.apache.derby.impl.store.raw.xact.Xact.logAndUndo(Xact.java:374)
>         at org.apache.derby.impl.store.raw.log.FileLogger.undo(FileLogger.java:1015)
>         at org.apache.derby.impl.store.raw.xact.Xact.abort(Xact.java:949)
>         at org.apache.derby.impl.store.raw.xact.XactFactory.rollbackAllTransactions(XactFactory.java:529)
>         at org.apache.derby.impl.store.raw.log.LogToFile.recover(LogToFile.java:1213)
>         at org.apache.derby.impl.store.raw.RawStore.boot(RawStore.java:334)
>         at org.apache.derby.impl.services.monitor.BaseMonitor.boot(BaseMonitor.java:2019)
>         at org.apache.derby.impl.services.monitor.TopService.bootModule(TopService.java:291)
>         at org.apache.derby.impl.services.monitor.BaseMonitor.startModule(BaseMonitor.java:573)
>         at org.apache.derby.iapi.services.monitor.Monitor.bootServiceModule(Monitor.java:427)
>         at org.apache.derby.impl.store.access.RAMAccessManager.boot(RAMAccessManager.java:1019)
>         at org.apache.derby.impl.services.monitor.BaseMonitor.boot(BaseMonitor.java:2019)
>         at org.apache.derby.impl.services.monitor.TopService.bootModule(TopService.java:291)
>         at org.apache.derby.impl.services.monitor.BaseMonitor.startModule(BaseMonitor.java:573)
>         at org.apache.derby.iapi.services.monitor.Monitor.bootServiceModule(Monitor.java:427)
>         at org.apache.derby.impl.db.BasicDatabase.bootStore(BasicDatabase.java:780)
>         at org.apache.derby.impl.db.BasicDatabase.boot(BasicDatabase.java:196)
>         at org.apache.derby.impl.services.monitor.BaseMonitor.boot(BaseMonitor.java:2019)
>         at org.apache.derby.impl.services.monitor.TopService.bootModule(TopService.java:291)
>         at org.apache.derby.impl.services.monitor.BaseMonitor.bootService(BaseMonitor.java:1856)
>         at org.apache.derby.impl.services.monitor.BaseMonitor.startProviderService(BaseMonitor.java:1722)
>         at org.apache.derby.impl.services.monitor.BaseMonitor.findProviderAndStartService(BaseMonitor.java:1602)
>         at org.apache.derby.impl.services.monitor.BaseMonitor.startPersistentService(BaseMonitor.java:1021)
>         at org.apache.derby.iapi.services.monitor.Monitor.startPersistentService(Monitor.java:550)
>         at org.apache.derby.impl.jdbc.EmbedConnection.bootDatabase(EmbedConnection.java:2572)
>         at org.apache.derby.impl.jdbc.EmbedConnection.<init>(EmbedConnection.java:365)
>         at org.apache.derby.impl.jdbc.EmbedConnection30.<init>(EmbedConnection30.java:73)
>         at org.apache.derby.impl.jdbc.EmbedConnection40.<init>(EmbedConnection40.java:54)
>         at org.apache.derby.jdbc.Driver40.getNewEmbedConnection(Driver40.java:68)
>         at org.apache.derby.jdbc.InternalDriver.connect(InternalDriver.java:238)
>         at org.apache.derby.jdbc.AutoloadedDriver.connect(AutoloadedDriver.java:119)
>         at java.sql.DriverManager.getConnection(DriverManager.java:582)
>         at java.sql.DriverManager.getConnection(DriverManager.java:154)
>         at org.apache.derby.impl.tools.ij.ij.dynamicConnection(ij.java:1243)
>         at org.apache.derby.impl.tools.ij.ij.ConnectStatement(ij.java:1093)
>         at org.apache.derby.impl.tools.ij.ij.ijStatement(ij.java:921)
>         at org.apache.derby.impl.tools.ij.utilMain.runScriptGuts(utilMain.java:328)
>         at org.apache.derby.impl.tools.ij.utilMain.go(utilMain.java:248)
>         at org.apache.derby.impl.tools.ij.Main.go(Main.java:215)
>         at org.apache.derby.impl.tools.ij.Main.mainCore(Main.java:181)
>         at org.apache.derby.impl.tools.ij.Main.main(Main.java:73)
>         at org.apache.derby.tools.ij.main(ij.java:59)
>         at org.apache.derby.iapi.tools.run.main(run.java:53)

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