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Andrew Medvedev commented on IGNITE-8957: ----------------------------------------- As I can see, lastEntry is absent only when cpPages == 0 and cpEntry == null for the first time, so no checkpoint is written. We also do not log checkpoint in org/apache/ignite/internal/processors/cache/persistence/GridCacheDatabaseSharedManager.java:3192 since hasDelta == false So we just exit early. > testFailGetLock() constantly fails. Last entry checkpoint history can be empty > ------------------------------------------------------------------------------ > > Key: IGNITE-8957 > URL: https://issues.apache.org/jira/browse/IGNITE-8957 > Project: Ignite > Issue Type: Bug > Components: persistence > Affects Versions: 2.7 > Reporter: Maxim Muzafarov > Assignee: Andrew Medvedev > Priority: Major > Labels: MakeTeamcityGreenAgain > > IgniteChangeGlobalStateTest#testFailGetLock constantly fails with exception: > {code} > java.lang.AssertionError > at > org.apache.ignite.internal.processors.cache.persistence.checkpoint.CheckpointHistory.onCheckpointFinished(CheckpointHistory.java:205) > at > org.apache.ignite.internal.processors.cache.persistence.GridCacheDatabaseSharedManager$Checkpointer.markCheckpointEnd(GridCacheDatabaseSharedManager.java:3654) > at > org.apache.ignite.internal.processors.cache.persistence.GridCacheDatabaseSharedManager$Checkpointer.doCheckpoint(GridCacheDatabaseSharedManager.java:3178) > at > org.apache.ignite.internal.processors.cache.persistence.GridCacheDatabaseSharedManager$Checkpointer.body(GridCacheDatabaseSharedManager.java:2953) > at > org.apache.ignite.internal.util.worker.GridWorker.run(GridWorker.java:110) > at java.lang.Thread.run(Thread.java:748) > {code} > As Sergey Chugunov > [mentioned|https://issues.apache.org/jira/browse/IGNITE-8737?focusedCommentId=16535062&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-16535062], > issue can be solved different ways: > {quote} > It seems we missed a case when lastEntry may be empty. We may choose here > from two options: > * Check if histMap is empty inside onCheckpointFinished. If it is just don't > log anything (it was the very first checkpoint). > * Check in caller that there is no history, calculate necessary index in > caller and pass it to onCheckpointFinished to prepare correct log > message.{quote} -- This message was sent by Atlassian JIRA (v7.6.3#76005)