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From "Mark DeBusschere (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DIRSERVER-1912) Shutdown process fails from a NPE in AbstractBTreePartition
Date Tue, 05 Nov 2013 04:31:17 GMT
Mark DeBusschere created DIRSERVER-1912:
-------------------------------------------

             Summary: Shutdown process fails from a NPE in AbstractBTreePartition
                 Key: DIRSERVER-1912
                 URL: https://issues.apache.org/jira/browse/DIRSERVER-1912
             Project: Directory ApacheDS
          Issue Type: Bug
    Affects Versions: 2.0.0-M15
            Reporter: Mark DeBusschere


During shutdown a NPE is thrown and stops the shutdown process.

[22:38:54] DEBUG [org.apache.directory.server.core.DefaultDirectoryService] - +++ DirectoryService
Shutdown required
[22:38:54] DEBUG [org.apache.directory.server.core.DefaultDirectoryService] - --- Syncing
the nexus 
[22:38:54] DEBUG [org.apache.directory.api.ldap.model.schema.syntaxCheckers.CsnSyntaxChecker]
- Syntax valid for '20130826073011.649000Z#000000#001#000000'
[22:38:54] DEBUG [org.apache.directory.api.ldap.model.schema.syntaxCheckers.GeneralizedTimeSyntaxChecker]
- Syntax valid for '20131102053854.055Z'
[22:38:54] DEBUG [org.apache.directory.api.ldap.model.schema.comparators.UuidComparator] -
comparing UUID objects '55e570e6-68be-4175-a2f5-72b0a008b365' with 'ff64c5d1-d2ec-441e-a1c0-306c89de2264'
[22:38:54] DEBUG [org.apache.directory.api.ldap.model.schema.comparators.UuidComparator] -
comparing UUID objects 'da0b5bea-a4b2-4059-ac8d-78eee3aa0c1b' with 'ff64c5d1-d2ec-441e-a1c0-306c89de2264'
[22:38:54] DEBUG [org.apache.directory.api.ldap.model.schema.comparators.UuidComparator] -
comparing UUID objects 'ff64c5d1-d2ec-441e-a1c0-306c89de2264' with 'ff64c5d1-d2ec-441e-a1c0-306c89de2264'
[22:38:54] DEBUG [org.apache.directory.api.ldap.model.schema.comparators.UuidComparator] -
comparing UUID objects 'ff64c5d1-d2ec-441e-a1c0-306c89de2264' with 'ff64c5d1-d2ec-441e-a1c0-306c89de2264'
[22:38:54] DEBUG [org.apache.directory.api.ldap.model.schema.registries.DefaultSchemaObjectRegistry]
- Found ATTRIBUTE_TYPE ( 1.3.6.1.4.1.4203.666.1.7
 NAME 'entryCSN'
 DESC change sequence number of the entry
 EQUALITY csnMatch
 ORDERING csnOrderingMatch
 SYNTAX 1.3.6.1.4.1.4203.666.11.2.1
 SINGLE-VALUE
 NO-USER-MODIFICATION
 USAGE directoryOperation
 )
 with oid: entrycsn
[22:38:54] WARN [org.apache.directory.server.core.shared.partition.DefaultPartitionNexus]
- Failed to save the contextCSN attribute value in ou=system entry.
org.apache.directory.api.ldap.model.exception.LdapOperationErrorException
	at org.apache.directory.server.core.partition.impl.btree.AbstractBTreePartition.modify(AbstractBTreePartition.java:1223)
	at org.apache.directory.server.core.shared.partition.DefaultPartitionNexus.sync(DefaultPartitionNexus.java:335)
	at org.apache.directory.server.core.DefaultDirectoryService.shutdown(DefaultDirectoryService.java:1298)
	at org.apache.directory.server.core.DefaultDirectoryService$1.run(DefaultDirectoryService.java:1229)
	at java.lang.Thread.run(Thread.java:724)
Caused by: java.lang.NullPointerException
	at org.apache.directory.server.core.partition.impl.btree.AbstractBTreePartition.updateCsnIndex(AbstractBTreePartition.java:2163)
	at org.apache.directory.server.core.partition.impl.btree.AbstractBTreePartition.modify(AbstractBTreePartition.java:1259)
	at org.apache.directory.server.core.partition.impl.btree.AbstractBTreePartition.modify(AbstractBTreePartition.java:1213)
	... 4 more
[22:38:54] WARN [org.apache.directory.server.core.DefaultDirectoryService] - Failed to shut
down the directory service: default
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:343)
	at org.apache.directory.server.core.DefaultDirectoryService.shutdown(DefaultDirectoryService.java:1298)
	at org.apache.directory.server.core.DefaultDirectoryService$1.run(DefaultDirectoryService.java:1229)
	at java.lang.Thread.run(Thread.java:724)
Nested exceptions to follow:

----------- Debug information

There is no ENTRY_CSN in the entry object hence returns a null.

in private void updateCsnIndex( Entry entry, String id ) throws Exception
    {
        String entryCsn = entry.get( SchemaConstants.ENTRY_CSN_AT ).getString();
        entryCsnIdx.drop( id );
        entryCsnIdx.add( entryCsn, id );
    }

---- The 'entry' object is the following.
    dn[n]: ou=system
    objectclass: top
    objectclass: organizationalUnit
    description: The System context entry
    contextCSN: 20130826073011.649000Z#000000#001#000000
    entryParentId: 00000000-0000-0000-0000-000000000000
    ou: system
    entryUUID: ff64c5d1-d2ec-441e-a1c0-306c89de2264
    modifyTimestamp: 20131102091722.945Z

I am not sure if the bug is ENTRY_CSN was not found, or this is a valid
case and the f() should check for NULL following entry.get()
Using default instance from fresh install this case doesn't show up.

I tested with adding a check for null and just returned and shutdown appears to
finish without error.




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