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https://issues.apache.org/jira/browse/DIRSERVER-2172?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15699350#comment-15699350
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Emmanuel Lecharny commented on DIRSERVER-2172:
----------------------------------------------
Actually, in 2.0.0-M23, we have added a 'repair' mode which will try to reindex
the database when it gets corrupted. That shoudl solve most of the problem you
have. It's just a matter of restarting the server adding the 'repair' command
line parameter to active this mode. Once the index have been re-computed, the
server will be up and running, in a good shape (hopefully).
And yes, until we are done with Mavibot, there is no much we can do with JDBM.
It has nothing to do with JDBM itself, which is quite a decent Java B-tree
implementation, it's just that we need a transaction layer on top of it, which
is missing...
> ApacheDS 2.0.0M12 in production, getting ERR_554 double get for block block
> 3,474
> ----------------------------------------------------------------------------------
>
> Key: DIRSERVER-2172
> URL: https://issues.apache.org/jira/browse/DIRSERVER-2172
> Project: Directory ApacheDS
> Issue Type: Bug
> Components: ldap
> Environment: GNU/Linux x86_64
> Reporter: sourabh sihare
> Priority: Critical
>
> We have upgraded apacheds from 2.0.0-M23 assuming that will fix the issue
> with data getting corrupt but we are still facing the same issue.The apacheds
> server keeps running but data does not load fully from front end like 400
> users instead of actual 3000+ users.
> -> As a workaround we take backup of partition daily and when the issue
> occurs we replace the partition from backed-up partition and restart the
> server.
> -> From apacheds.log we get below error trace-
> [16:13:21] DEBUG [org.apache.directory.server.OPERATION_LOG] - <<
> CompareOperation successful
> [16:13:21] DEBUG [org.apache.directory.server.OPERATION_TIME] - Compare
> operation took 183000 ns
> [16:13:21] DEBUG [org.apache.directory.server.OPERATION_LOG] - >>
> CompareOperation : CompareContext for Dn 'uid=GA1346,ou=users,o=sccm', oid :
> <objectClass>, value :'groupOfNames'
> [16:13:21] DEBUG [org.apache.directory.server.OPERATION_LOG] - >>
> LookupOperation : FilteringOperationContext for Dn
> 'uid=GA1346,ou=users,o=sccm', +, *
> [16:13:21] WARN [org.apache.directory.server.ldap.LdapProtocolHandler] -
> Unexpected exception forcing session to close: sending disconnect notice to
> client.
> java.lang.Error: ERR_554 double get for block 3,474
> at jdbm.recman.RecordFile.get(RecordFile.java:185)
> at
> jdbm.recman.PhysicalRowIdManager.allocNew(PhysicalRowIdManager.java:202)
> at
> jdbm.recman.PhysicalRowIdManager.alloc(PhysicalRowIdManager.java:177)
> at
> jdbm.recman.PhysicalRowIdManager.update(PhysicalRowIdManager.java:101)
> at jdbm.recman.BaseRecordManager.update(BaseRecordManager.java:281)
> at
> jdbm.recman.CacheRecordManager$CacheListener.cacheObjectEvicted(CacheRecordManager.java:459)
> at
> jdbm.recman.CacheRecordManager$CacheListener.cacheObjectEvicted(CacheRecordManager.java:444)
> at jdbm.helper.MRU.purgeEntry(MRU.java:310)
> at jdbm.helper.MRU.put(MRU.java:128)
> at jdbm.recman.CacheRecordManager.fetch(CacheRecordManager.java:268)
> at jdbm.btree.BPage.loadBPage(BPage.java:949)
> at jdbm.btree.BPage.find(BPage.java:280)
> at jdbm.btree.BTree.find(BTree.java:413)
> at
> org.apache.directory.server.core.partition.impl.btree.jdbm.JdbmTable.get(JdbmTable.java:343)
> at
> org.apache.directory.server.core.partition.impl.btree.AbstractBTreePartition.fetch(AbstractBTreePartition.java:1274)
> at
> org.apache.directory.server.core.partition.impl.btree.AbstractBTreePartition.lookup(AbstractBTreePartition.java:1202)
> at
> org.apache.directory.server.core.shared.partition.DefaultPartitionNexus.lookup(DefaultPartitionNexus.java:464)
> at
> org.apache.directory.server.core.api.interceptor.BaseInterceptor$1.lookup(BaseInterceptor.java:161)
> at
> org.apache.directory.server.core.api.interceptor.BaseInterceptor.next(BaseInterceptor.java:483)
> at
> org.apache.directory.server.core.collective.CollectiveAttributeInterceptor.lookup(CollectiveAttributeInterceptor.java:143)
> at
> org.apache.directory.server.core.api.interceptor.BaseInterceptor.next(BaseInterceptor.java:483)
> at
> org.apache.directory.server.core.operational.OperationalAttributeInterceptor.lookup(OperationalAttributeInterceptor.java:329)
> at
> org.apache.directory.server.core.api.interceptor.BaseInterceptor.next(BaseInterceptor.java:483)
> at
> org.apache.directory.server.core.schema.SchemaInterceptor.lookup(SchemaInterceptor.java:1142)
> at
> org.apache.directory.server.core.api.interceptor.BaseInterceptor.next(BaseInterceptor.java:483)
> at
> org.apache.directory.server.core.authz.DefaultAuthorizationInterceptor.lookup(DefaultAuthorizationInterceptor.java:231)
> at
> org.apache.directory.server.core.api.interceptor.BaseInterceptor.next(BaseInterceptor.java:483)
> at
> org.apache.directory.server.core.authz.AciAuthorizationInterceptor.lookup(AciAuthorizationInterceptor.java:779)
> at
> org.apache.directory.server.core.api.interceptor.BaseInterceptor.next(BaseInterceptor.java:483)
> at
> org.apache.directory.server.core.authn.AuthenticationInterceptor.lookup(AuthenticationInterceptor.java:852)
> at
> org.apache.directory.server.core.api.interceptor.BaseInterceptor.next(BaseInterceptor.java:483)
> at
> org.apache.directory.server.core.normalization.NormalizationInterceptor.lookup(NormalizationInterceptor.java:196)
> at
> org.apache.directory.server.core.DefaultOperationManager.lookup(DefaultOperationManager.java:775)
> at
> org.apache.directory.server.core.shared.DefaultCoreSession.lookup(DefaultCoreSession.java:560)
> at
> org.apache.directory.server.core.DefaultOperationManager.getOriginalEntry(DefaultOperationManager.java:194)
> at
> org.apache.directory.server.core.DefaultOperationManager.compare(DefaultOperationManager.java:531)
> at
> org.apache.directory.server.core.shared.DefaultCoreSession.compare(DefaultCoreSession.java:885)
> at
> org.apache.directory.server.ldap.handlers.request.CompareRequestHandler.handle(CompareRequestHandler.java:52)
> at
> org.apache.directory.server.ldap.handlers.request.CompareRequestHandler.handle(CompareRequestHandler.java:38)
> at
> org.apache.directory.server.ldap.handlers.LdapRequestHandler.handleMessage(LdapRequestHandler.java:207)
> at
> org.apache.directory.server.ldap.handlers.LdapRequestHandler.handleMessage(LdapRequestHandler.java:56)
> at
> org.apache.mina.handler.demux.DemuxingIoHandler.messageReceived(DemuxingIoHandler.java:243)
> at
> org.apache.directory.server.ldap.LdapProtocolHandler.messageReceived(LdapProtocolHandler.java:216)
> at
> org.apache.mina.core.filterchain.DefaultIoFilterChain$TailFilter.messageReceived(DefaultIoFilterChain.java:854)
> at
> org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:542)
> at
> org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1300(DefaultIoFilterChain.java:48)
> at
> org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.messageReceived(DefaultIoFilterChain.java:943)
> at
> org.apache.mina.core.filterchain.IoFilterEvent.fire(IoFilterEvent.java:74)
> at org.apache.mina.core.session.IoEvent.run(IoEvent.java:63)
> at
> org.apache.mina.filter.executor.UnorderedThreadPoolExecutor$Worker.runTask(UnorderedThreadPoolExecutor.java:476)
> at
> org.apache.mina.filter.executor.UnorderedThreadPoolExecutor$Worker.run(UnorderedThreadPoolExecutor.java:430)
> at java.lang.Thread.run(Thread.java:745)
>
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