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https://issues.apache.org/jira/browse/IGNITE-12863?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17076390#comment-17076390
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Alex Serbin commented on IGNITE-12863:
--------------------------------------
Thank you!
> NPE while initializing Cassandra Store
> --------------------------------------
>
> Key: IGNITE-12863
> URL: https://issues.apache.org/jira/browse/IGNITE-12863
> Project: Ignite
> Issue Type: Bug
> Affects Versions: 2.8
> Reporter: Alex Serbin
> Priority: Major
> Fix For: 2.8.1
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> When trying to create a simple cache with Cassandra store and have value
> persistence strategy POJO, the following exception occurs
> {code:java}
> Caused by: java.lang.NullPointerException: nullCaused by:
> java.lang.NullPointerException: null at
> org.apache.ignite.cache.store.cassandra.persistence.PojoField.calculatedField(PojoField.java:155)
> ~[ignite-cassandra-store-2.8.0.jar:2.8.0] at
> org.apache.ignite.cache.store.cassandra.persistence.PersistenceController.prepareLoadStatements(PersistenceController.java:311)
> ~[ignite-cassandra-store-2.8.0.jar:2.8.0] at
> org.apache.ignite.cache.store.cassandra.persistence.PersistenceController.<init>(PersistenceController.java:85)
> ~[ignite-cassandra-store-2.8.0.jar:2.8.0] at
> org.apache.ignite.cache.store.cassandra.CassandraCacheStore.<init>(CassandraCacheStore.java:106)
> ~[ignite-cassandra-store-2.8.0.jar:2.8.0] at
> org.apache.ignite.cache.store.cassandra.CassandraCacheStoreFactory.create(CassandraCacheStoreFactory.java:59)
> ~[ignite-cassandra-store-2.8.0.jar:2.8.0] at
> org.apache.ignite.cache.store.cassandra.CassandraCacheStoreFactory.create(CassandraCacheStoreFactory.java:34)
> ~[ignite-cassandra-store-2.8.0.jar:2.8.0] at
> org.apache.ignite.internal.processors.cache.GridCacheProcessor.createCacheContext(GridCacheProcessor.java:1199)
> ~[ignite-core-2.8.0.jar:2.8.0] at
> org.apache.ignite.internal.processors.cache.GridCacheProcessor.prepareCacheContext(GridCacheProcessor.java:1995)
> ~[ignite-core-2.8.0.jar:2.8.0] at
> org.apache.ignite.internal.processors.cache.GridCacheProcessor.lambda$null$6a5b31b9$1(GridCacheProcessor.java:1830)
> ~[ignite-core-2.8.0.jar:2.8.0] at
> org.apache.ignite.internal.processors.cache.GridCacheProcessor.lambda$prepareStartCaches$8(GridCacheProcessor.java:1754)
> ~[ignite-core-2.8.0.jar:2.8.0] at
> org.apache.ignite.internal.processors.cache.GridCacheProcessor.lambda$prepareStartCaches$926b6886$1(GridCacheProcessor.java:1827)
> ~[ignite-core-2.8.0.jar:2.8.0] at
> org.apache.ignite.internal.util.IgniteUtils.lambda$null$1(IgniteUtils.java:11138)
> ~[ignite-core-2.8.0.jar:2.8.0] at
> java.util.concurrent.FutureTask.run$$$capture(FutureTask.java:266)
> ~[na:1.8.0_181] at java.util.concurrent.FutureTask.run(FutureTask.java)
> ~[na:1.8.0_181] at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> ~[na:1.8.0_181] at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> ~[na:1.8.0_181] at java.lang.Thread.run(Thread.java:748) ~[na:1.8.0_181]
> {code}
> It looks like that recent changes of IGNITE-1903 are leading to this issue,
> as we are starting to serialize {{CacheStoreFactory}}, which contains
> {{PojoFiled}}, which in its turn has transient field accessor. This leads to
> accessor being null after deserialization. Note, that this happens only when
> passing {{persistenceSettings}} (not {{persistenceSettingsBean}})
> Works fine with Ignite 2.7.6.
> Probably related to IGNITE-8500
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