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https://issues.apache.org/jira/browse/IGNITE-10556?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16719048#comment-16719048
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Pavel Kovalenko commented on IGNITE-10556:
------------------------------------------
[~DmitriyGovorukhin] Changes merged to master.
> Attempt to decrypt data records during read-only metastorage recovery leads
> to NPE
> ----------------------------------------------------------------------------------
>
> Key: IGNITE-10556
> URL: https://issues.apache.org/jira/browse/IGNITE-10556
> Project: Ignite
> Issue Type: Bug
> Components: cache
> Affects Versions: 2.8
> Reporter: Pavel Kovalenko
> Assignee: Pavel Kovalenko
> Priority: Critical
> Fix For: 2.8
>
>
> Stacktrace:
> {noformat}
> Caused by: java.lang.NullPointerException
> at
> org.apache.ignite.internal.processors.cache.persistence.GridCacheDatabaseSharedManager$RestoreStateContext.lambda$next$0(GridCacheDatabaseSharedManager.java:4795)
> at
> java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:174)
> at
> java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1382)
> at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
> at
> java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
> at
> java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
> at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
> at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499)
> at
> org.apache.ignite.internal.processors.cache.persistence.GridCacheDatabaseSharedManager$RestoreStateContext.next(GridCacheDatabaseSharedManager.java:4799)
> at
> org.apache.ignite.internal.processors.cache.persistence.GridCacheDatabaseSharedManager$RestoreLogicalState.next(GridCacheDatabaseSharedManager.java:4926)
> at
> org.apache.ignite.internal.processors.cache.persistence.GridCacheDatabaseSharedManager.applyLogicalUpdates(GridCacheDatabaseSharedManager.java:2370)
> at
> org.apache.ignite.internal.processors.cache.persistence.GridCacheDatabaseSharedManager.readMetastore(GridCacheDatabaseSharedManager.java:733)
> at
> org.apache.ignite.internal.processors.cache.persistence.GridCacheDatabaseSharedManager.notifyMetaStorageSubscribersOnReadyForRead(GridCacheDatabaseSharedManager.java:4493)
> at org.apache.ignite.internal.IgniteKernal.start(IgniteKernal.java:1048)
> ... 20 more
> {noformat}
> It happens because there is no encryption key for that cache group.
> Encryption keys are initialized after read-only metastorage is ready. There
> is a bug in RestoreStateContext which tries to filter out DataEntries in
> DataRecord by group id during read-only metastorage recovery. We should
> explicitly skip such records before filtering. As a possible solution, we
> should provide more flexible records filter to RestoreStateContext if we do
> recovery of read-only metastorage.
> We should also return something more meaningful instead of null if no
> encryption key is found for DataRecord, as it can be a silent problem for
> components iterating over WAL.
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