[jira] [Created] (CASSANDRA-13337) Dropping column results in "corrupt" SSTable

["Jonas Borgström (JIRA)" <ji...@apache.org>]

Jonas Borgström created CASSANDRA-13337:
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             Summary: Dropping column results in "corrupt" SSTable
                 Key: CASSANDRA-13337
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-13337
             Project: Cassandra
          Issue Type: Bug
          Components: Compaction
            Reporter: Jonas Borgström


It seems like dropping a column can make SSTables containing rows with writes to only the dropped column will become uncompactable.

Also Cassandra <= 3.9 and <= 3.0.11 will even refuse to start with the same stack trace

{code}
cqlsh -e "create keyspace test with replication = { 'class' : 'SimpleStrategy', 'replication_factor' : 1 }"
cqlsh -e "create table test.test(pk text primary key, x text, y text)"

cqlsh -e "update test.test set x='1' where pk='1'"
nodetool flush

cqlsh -e "update test.test set x='1', y='1' where pk='1'"
nodetool flush
cqlsh -e "alter table test.test drop x"

nodetool compact test test
error: Corrupt empty row found in unfiltered partition
-- StackTrace --
java.io.IOException: Corrupt empty row found in unfiltered partition
	at org.apache.cassandra.db.rows.UnfilteredSerializer.deserialize(UnfilteredSerializer.java:382)
	at org.apache.cassandra.io.sstable.SSTableSimpleIterator$CurrentFormatIterator.computeNext(SSTableSimpleIterator.java:87)
	at org.apache.cassandra.io.sstable.SSTableSimpleIterator$CurrentFormatIterator.computeNext(SSTableSimpleIterator.java:65)
	at org.apache.cassandra.utils.AbstractIterator.hasNext(AbstractIterator.java:47)
	at org.apache.cassandra.io.sstable.SSTableIdentityIterator.doCompute(SSTableIdentityIterator.java:123)
	at org.apache.cassandra.io.sstable.SSTableIdentityIterator.computeNext(SSTableIdentityIterator.java:100)
	at org.apache.cassandra.io.sstable.SSTableIdentityIterator.computeNext(SSTableIdentityIterator.java:30)
	at org.apache.cassandra.utils.AbstractIterator.hasNext(AbstractIterator.java:47)
	at org.apache.cassandra.db.rows.LazilyInitializedUnfilteredRowIterator.computeNext(LazilyInitializedUnfilteredRowIterator.java:95)
	at org.apache.cassandra.db.rows.LazilyInitializedUnfilteredRowIterator.computeNext(LazilyInitializedUnfilteredRowIterator.java:32)
	at org.apache.cassandra.utils.AbstractIterator.hasNext(AbstractIterator.java:47)
	at org.apache.cassandra.utils.MergeIterator$Candidate.advance(MergeIterator.java:369)
	at org.apache.cassandra.utils.MergeIterator$ManyToOne.advance(MergeIterator.java:189)
	at org.apache.cassandra.utils.MergeIterator$ManyToOne.computeNext(MergeIterator.java:158)
	at org.apache.cassandra.utils.AbstractIterator.hasNext(AbstractIterator.java:47)
	at org.apache.cassandra.db.rows.UnfilteredRowIterators$UnfilteredRowMergeIterator.computeNext(UnfilteredRowIterators.java:509)
	at org.apache.cassandra.db.rows.UnfilteredRowIterators$UnfilteredRowMergeIterator.computeNext(UnfilteredRowIterators.java:369)
	at org.apache.cassandra.utils.AbstractIterator.hasNext(AbstractIterator.java:47)
	at org.apache.cassandra.db.transform.BaseRows.hasNext(BaseRows.java:129)
	at org.apache.cassandra.db.transform.UnfilteredRows.isEmpty(UnfilteredRows.java:58)
	at org.apache.cassandra.db.partitions.PurgeFunction.applyToPartition(PurgeFunction.java:67)
	at org.apache.cassandra.db.partitions.PurgeFunction.applyToPartition(PurgeFunction.java:26)
	at org.apache.cassandra.db.transform.BasePartitions.hasNext(BasePartitions.java:96)
	at org.apache.cassandra.db.compaction.CompactionIterator.hasNext(CompactionIterator.java:227)
	at org.apache.cassandra.db.compaction.CompactionTask.runMayThrow(CompactionTask.java:190)
	at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:28)
	at org.apache.cassandra.db.compaction.CompactionTask.executeInternal(CompactionTask.java:89)
	at org.apache.cassandra.db.compaction.AbstractCompactionTask.execute(AbstractCompactionTask.java:61)
	at org.apache.cassandra.db.compaction.CompactionManager$8.runMayThrow(CompactionManager.java:610)
	at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:28)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at org.apache.cassandra.concurrent.NamedThreadFactory.lambda$threadLocalDeallocator$0(NamedThreadFactory.java:79)
	at java.lang.Thread.run(Thread.java:745)

{code}



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