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https://issues.apache.org/jira/browse/DIRSERVER-2047?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14316824#comment-14316824
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Emmanuel Lecharny commented on DIRSERVER-2047:
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Ok, the Mavibot Cursor has a big issue. We have two markers, {{BEFORE_FIRST}}
and {{AFTER_LAST}} which values are -1L and -2L, which sadly can collide with
the position in a leaf (which is always marked as a negative value, and thus
can be _1L or -2L). In this case, the cursor may return that no entry is
available, even if it's not the case.
The fast is that if you inject the entries many times, you will get errors in
various places, because the UUID will change.
This is a clear bug, and I'm working on fixing it.
> Some data can be lost when using ldapadd command to insert data into apacheds
> -----------------------------------------------------------------------------
>
> Key: DIRSERVER-2047
> URL: https://issues.apache.org/jira/browse/DIRSERVER-2047
> Project: Directory ApacheDS
> Issue Type: Bug
> Components: ldap
> Affects Versions: 2.0.0-M19
> Environment: centOS 6.5 with openldap and apacheds installed
> Reporter: linzhao
> Priority: Blocker
> Labels: LDAP
> Fix For: 2.0.0-M20
>
> Attachments: data.ldif, ordered-data.ldif, site.ldif, site_new.ldif,
> site_topology_schema.ldif, supercluster_partition.ldif, test.jpg
>
>
> In our system, we need to do data backup and restore for apacheds. For now,
> we use the ldapsearch and ldapadd command to do BR function. We use
> ldapsearch to backup apacheds data to be a ldif file and use ldapadd to
> restore the data. But when the ldif is a little big, I always found that the
> data can't be restored successfully, but the ladpadd command showed that the
> data can be added successfully. No exceptions for ldapadd command. But the
> restored data didn't exist in the node. This bug only happened when the ldif
> file is a little big. I mean if the data entry greater than 500 entries. But
> the node for backup and restore is using mavibot partition. Because I found
> so many problems for jdbm. So I change it to mavibot partition. Another
> question is that do you know is there some good way to do the data backup and
> restore for apacheds?
> May be my mavibot partition has some problems, so someone can tell me how to
> create a mavibot partition in APACHEDS? Because the mavibot parttion I
> created can't be viewed when click the "Open Configuration" in apacheds
> studio. Also I used unboundid JDK to insert many entries apacheds and the
> same problem happened. So someone can tell me how to config the mavibot
> partition on APACHEDS? That's may be very helpful.
> Below is the exceptions from apacheds when problems happened:
> [16:21:41] INFO [org.apache.directory.server.ldap.LdapServer] - Ldap service
> stopped.
> [16:21:41] WARN
> [org.apache.directory.server.core.shared.partition.DefaultPartitionNexus] -
> Failed to flush partition data out.
> org.apache.directory.api.ldap.model.exception.LdapOperationErrorException
> at
> org.apache.directory.server.core.partition.impl.btree.AbstractBTreePartition.saveContextCsn(AbstractBTreePartition.java:3364)
> at
> org.apache.directory.server.core.shared.partition.DefaultPartitionNexus.sync(DefaultPartitionNexus.java:319)
> at
> org.apache.directory.server.core.DefaultDirectoryService.shutdown(DefaultDirectoryService.java:1283)
> at org.apache.directory.server.ApacheDsService.stop(ApacheDsService.java:600)
> at
> org.apache.directory.server.wrapper.ApacheDsTanukiWrapper.stop(ApacheDsTanukiWrapper.java:97)
> at org.tanukisoftware.wrapper.WrapperManager$13.run(WrapperManager.java:3134)
> Caused by: java.lang.NullPointerException
> at
> org.apache.directory.server.core.partition.impl.btree.AbstractBTreePartition.saveContextCsn(AbstractBTreePartition.java:3350)
> ... 5 more
> [16:21:41] ERROR [org.apache.directory.server.wrapper.ApacheDsTanukiWrapper]
> - Failed to stop the service.
> org.apache.directory.api.util.exception.MultiException: ERR_265 Grouping many
> exceptions on root nexus sync()
> at
> org.apache.directory.server.core.shared.partition.DefaultPartitionNexus.sync(DefaultPartitionNexus.java:328)
> at
> org.apache.directory.server.core.DefaultDirectoryService.shutdown(DefaultDirectoryService.java:1283)
> at org.apache.directory.server.ApacheDsService.stop(ApacheDsService.java:600)
> at
> org.apache.directory.server.wrapper.ApacheDsTanukiWrapper.stop(ApacheDsTanukiWrapper.java:97)
> at org.tanukisoftware.wrapper.WrapperManager$13.run(WrapperManager.java:3134)
> Nested exceptions to follow:
> INFO | jvm 1 | 2015/02/02 17:11:06 | [17:11:06] WARN
> [org.apache.directory.server.ldap.LdapProtocolHandler] - Unexpected exception
> forcing session to close: sending disconnect notice to client.
> INFO | jvm 1 | 2015/02/02 17:11:06 | java.io.IOException: Connection reset by
> peer
> INFO | jvm 1 | 2015/02/02 17:11:06 | at
> sun.nio.ch.FileDispatcherImpl.read0(Native Method)
> INFO | jvm 1 | 2015/02/02 17:11:06 | at
> sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:39)
> INFO | jvm 1 | 2015/02/02 17:11:06 | at
> sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223)
> INFO | jvm 1 | 2015/02/02 17:11:06 | at
> sun.nio.ch.IOUtil.read(IOUtil.java:197)
> INFO | jvm 1 | 2015/02/02 17:11:06 | at
> sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:379)
> INFO | jvm 1 | 2015/02/02 17:11:06 | at
> org.apache.mina.transport.socket.nio.NioProcessor.read(NioProcessor.java:311)
> INFO | jvm 1 | 2015/02/02 17:11:06 | at
> org.apache.mina.transport.socket.nio.NioProcessor.read(NioProcessor.java:45)
> INFO | jvm 1 | 2015/02/02 17:11:06 | at
> org.apache.mina.core.polling.AbstractPollingIoProcessor.read(AbstractPollingIoProcessor.java:694)
> INFO | jvm 1 | 2015/02/02 17:11:06 | at
> org.apache.mina.core.polling.AbstractPollingIoProcessor.process(AbstractPollingIoProcessor.java:668)
> INFO | jvm 1 | 2015/02/02 17:11:06 | at
> org.apache.mina.core.polling.AbstractPollingIoProcessor.process(AbstractPollingIoProcessor.java:657)
> INFO | jvm 1 | 2015/02/02 17:11:06 | at
> org.apache.mina.core.polling.AbstractPollingIoProcessor.access$600(AbstractPollingIoProcessor.java:67)
> INFO | jvm 1 | 2015/02/02 17:11:06 | at
> org.apache.mina.core.polling.AbstractPollingIoProcessor$Processor.run(AbstractPollingIoProcessor.java:1121)
> INFO | jvm 1 | 2015/02/02 17:11:06 | at
> org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:64)
> INFO | jvm 1 | 2015/02/02 17:11:06 | at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> INFO | jvm 1 | 2015/02/02 17:11:06 | at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> INFO | jvm 1 | 2015/02/02 17:11:06 | at java.lang.Thread.run(Thread.java:745)
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