Jonathan Ellis created CASSANDRA-6791:
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Summary: CompressedSequentialWriter can write zero-length segments
during scrub
Key: CASSANDRA-6791
URL: https://issues.apache.org/jira/browse/CASSANDRA-6791
Project: Cassandra
Issue Type: Bug
Components: Core
Reporter: Jonathan Ellis
Assignee: Marcus Eriksson
Priority: Minor
Fix For: 1.2.16, 2.0.6
This results in errors like this:
{noformat}
java.lang.IllegalArgumentException
at java.nio.Buffer.limit(Buffer.java:267)
at
org.apache.cassandra.io.compress.CompressedRandomAccessReader.decompressChunk(CompressedRandomAccessReader.java:108)
at
org.apache.cassandra.io.compress.CompressedRandomAccessReader.reBuffer(CompressedRandomAccessReader.java:87)
at
org.apache.cassandra.io.util.RandomAccessReader.seek(RandomAccessReader.java:280)
{noformat}
(Because a zero-length chunk actually turns into a length of -4 in the
{{compressed.limit(chunk.length)}} call, since no checksum is written either.)
I thought this would be from two bad rows in a row, but it's not; the source
file that resulted in scrub creating this, did not have any of those. (But it
does have several instances of bad-good-bad, i.e. separated by exactly one row,
that is not large enough to force a new compressed chunk.)
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