[IGNITE-15472] MetaStorage.iterate not thread safe with delete

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: persistence
• Assignee: Unassigned
• Reporter: Alexander Belyak
• Created: 08/Sep/21 06:08
• Updated: 08/Sep/21 06:08

Description

Got exception while iterating ReadWriteMetastorage:

// [2021-09-08 12:41:24,762][ERROR][stat-mgmt-#147%stat.StatisticsGlobalViewPersistenceTest0%][IgniteStatisticsConfigurationManager] Unexpected error on check local statisticsjava.lang.AssertionError: itemId=2, directCnt=2, indirectCnt=0, page=0001000100000048 [496, 1696][][free=1638]	at org.apache.ignite.internal.processors.cache.persistence.tree.io.AbstractDataPageIO.getDataOffset(AbstractDataPageIO.java:582)	at org.apache.ignite.internal.processors.cache.persistence.tree.io.AbstractDataPageIO.readPayload(AbstractDataPageIO.java:626)	at org.apache.ignite.internal.processors.cache.persistence.partstorage.PartitionMetaStorageImpl.readRow(PartitionMetaStorageImpl.java:107)	at org.apache.ignite.internal.processors.cache.persistence.metastorage.MetaStorage.iterate(MetaStorage.java:363)	at org.apache.ignite.internal.processors.query.stat.IgniteStatisticsPersistenceStoreImpl.iterateMeta(IgniteStatisticsPersistenceStoreImpl.java:659)	at org.apache.ignite.internal.processors.query.stat.IgniteStatisticsPersistenceStoreImpl.getLocalPartitionsStatistics(IgniteStatisticsPersistenceStoreImpl.java:370)	at org.apache.ignite.internal.processors.query.stat.IgniteStatisticsRepository.getLocalPartitionsStatistics(IgniteStatisticsRepository.java:239)  (edited) 

There is probability of parallel deletion of the same keys.