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https://issues.apache.org/jira/browse/CASSANDRA-11988?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15397598#comment-15397598
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Evan Prothro commented on CASSANDRA-11988:
------------------------------------------
I'm with Hau. We're eager to see this resolved in 3.0.9 if at all possible. To
be clear, the current patch does not fix the issue for us, compaction still
fails.
Currently we're working around this by effectively disabling compaction with an
extremely high value for `gc_grace_seconds` on tables with static fields.
Clearly the shorter we have to live with that workaround the less nervous we
are.
Please don't hesitate to let us know anything we can do to help isolate or
reproduce. As Hau mentioned, we can provide an sstable and schema that should
reproduce.
> NullPointerExpception when reading/compacting table
> ---------------------------------------------------
>
> Key: CASSANDRA-11988
> URL: https://issues.apache.org/jira/browse/CASSANDRA-11988
> Project: Cassandra
> Issue Type: Bug
> Reporter: Nimi Wariboko Jr.
> Assignee: Sylvain Lebresne
> Fix For: 3.0.9, 3.9
>
>
> I have a table that suddenly refuses to be read or compacted. Issuing a read
> on the table causes a NPE.
> On compaction, it returns the error
> {code}
> ERROR [CompactionExecutor:6] 2016-06-09 17:10:15,724 CassandraDaemon.java:213
> - Exception in thread Thread[CompactionExecutor:6,1,main]
> java.lang.NullPointerException: null
> at
> org.apache.cassandra.db.transform.UnfilteredRows.isEmpty(UnfilteredRows.java:38)
> ~[apache-cassandra-3.6.jar:3.6]
> at
> org.apache.cassandra.db.partitions.PurgeFunction.applyToPartition(PurgeFunction.java:64)
> ~[apache-cassandra-3.6.jar:3.6]
> at
> org.apache.cassandra.db.partitions.PurgeFunction.applyToPartition(PurgeFunction.java:24)
> ~[apache-cassandra-3.6.jar:3.6]
> at
> org.apache.cassandra.db.transform.BasePartitions.hasNext(BasePartitions.java:76)
> ~[apache-cassandra-3.6.jar:3.6]
> at
> org.apache.cassandra.db.compaction.CompactionIterator.hasNext(CompactionIterator.java:226)
> ~[apache-cassandra-3.6.jar:3.6]
> at
> org.apache.cassandra.db.compaction.CompactionTask.runMayThrow(CompactionTask.java:182)
> ~[apache-cassandra-3.6.jar:3.6]
> at
> org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:28)
> ~[apache-cassandra-3.6.jar:3.6]
> at
> org.apache.cassandra.db.compaction.CompactionTask.executeInternal(CompactionTask.java:82)
> ~[apache-cassandra-3.6.jar:3.6]
> at
> org.apache.cassandra.db.compaction.AbstractCompactionTask.execute(AbstractCompactionTask.java:60)
> ~[apache-cassandra-3.6.jar:3.6]
> at
> org.apache.cassandra.db.compaction.CompactionManager$BackgroundCompactionCandidate.run(CompactionManager.java:264)
> ~[apache-cassandra-3.6.jar:3.6]
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> ~[na:1.8.0_45]
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> ~[na:1.8.0_45]
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> ~[na:1.8.0_45]
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> [na:1.8.0_45]
> at java.lang.Thread.run(Thread.java:745) [na:1.8.0_45]
> {code}
> Schema:
> {code}
> CREATE TABLE cmpayments.report_payments (
> reportid timeuuid,
> userid timeuuid,
> adjustedearnings decimal,
> deleted set<timeuuid> static,
> earnings map<timeuuid, decimal>,
> gross map<timeuuid, decimal>,
> organizationid text,
> payall timestamp static,
> status text,
> PRIMARY KEY (reportid, userid)
> ) WITH CLUSTERING ORDER BY (userid ASC)
> AND bloom_filter_fp_chance = 0.01
> AND caching = {'keys': 'ALL', 'rows_per_partition': 'NONE'}
> AND comment = ''
> AND compaction = {'class':
> 'org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy',
> 'max_threshold': '32', 'min_threshold': '4'}
> AND compression = {'chunk_length_in_kb': '64', 'class':
> 'org.apache.cassandra.io.compress.LZ4Compressor'}
> AND crc_check_chance = 1.0
> AND dclocal_read_repair_chance = 0.1
> AND default_time_to_live = 0
> AND gc_grace_seconds = 864000
> AND max_index_interval = 2048
> AND memtable_flush_period_in_ms = 0
> AND min_index_interval = 128
> AND read_repair_chance = 0.0
> AND speculative_retry = '99PERCENTILE';
> {code}
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