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https://issues.apache.org/jira/browse/CASSANDRA-13482?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16083592#comment-16083592
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Sylvain Lebresne commented on CASSANDRA-13482:
----------------------------------------------
lgtm, +1.
> NPE on non-existing row read when row cache is enabled
> ------------------------------------------------------
>
> Key: CASSANDRA-13482
> URL: https://issues.apache.org/jira/browse/CASSANDRA-13482
> Project: Cassandra
> Issue Type: Bug
> Reporter: Alex Petrov
> Assignee: Alex Petrov
>
> The problem is reproducible on 3.0 with:
> {code}
> -# row_cache_class_name: org.apache.cassandra.cache.OHCProvider
> +row_cache_class_name: org.apache.cassandra.cache.OHCProvider
> -row_cache_size_in_mb: 0
> +row_cache_size_in_mb: 100
> {code}
> Table setup:
> {code}
> CREATE TABLE cache_tables (pk int, v1 int, v2 int, v3 int, primary key (pk,
> v1)) WITH CACHING = { 'keys': 'ALL', 'rows_per_partition': '1' } ;
> {code}
> No data is required, only a head query (or any pk/ck query but with full
> partitions cached).
> {code}
> select * from cross_page_queries where pk = 10000 ;
> {code}
> {code}
> java.lang.AssertionError: null
> at
> org.apache.cassandra.db.rows.UnfilteredRowIterators.concat(UnfilteredRowIterators.java:193)
> ~[main/:na]
> at
> org.apache.cassandra.db.SinglePartitionReadCommand.getThroughCache(SinglePartitionReadCommand.java:461)
> ~[main/:na]
> at
> org.apache.cassandra.db.SinglePartitionReadCommand.queryStorage(SinglePartitionReadCommand.java:358)
> ~[main/:na]
> at
> org.apache.cassandra.db.ReadCommand.executeLocally(ReadCommand.java:395)
> ~[main/:na]
> at
> org.apache.cassandra.service.StorageProxy$LocalReadRunnable.runMayThrow(StorageProxy.java:1794)
> ~[main/:na]
> at
> org.apache.cassandra.service.StorageProxy$DroppableRunnable.run(StorageProxy.java:2472)
> ~[main/:na]
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> ~[na:1.8.0_121]
> at
> org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService$FutureTask.run(AbstractLocalAwareExecutorService.java:164)
> ~[main/:na]
> at
> org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService$LocalSessionFutureTask.run(AbstractLocalAwareExecutorService.java:136)
> [main/:na]
> at org.apache.cassandra.concurrent.SEPWorker.run(SEPWorker.java:105)
> [main/:na]
> at java.lang.Thread.run(Thread.java:745) [na:1.8.0_121]
> {code}
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