Alex Petrov created CASSANDRA-13482:
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Summary: 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
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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