Jeremiah Jordan created CASSANDRA-5930:
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Summary: Offline scrubs can choke on broken files
Key: CASSANDRA-5930
URL: https://issues.apache.org/jira/browse/CASSANDRA-5930
Project: Cassandra
Issue Type: Bug
Reporter: Jeremiah Jordan
Priority: Minor
There are cases where offline scrub can hit an exception and die, like:
{noformat}
WARNING: Non-fatal error reading row (stacktrace follows)
Exception in thread "main" java.io.IOError: java.io.IOError:
java.io.EOFException
at org.apache.cassandra.db.compaction.Scrubber.scrub(Scrubber.java:242)
at
org.apache.cassandra.tools.StandaloneScrubber.main(StandaloneScrubber.java:121)
Caused by: java.io.IOError: java.io.EOFException
at
org.apache.cassandra.db.compaction.PrecompactedRow.merge(PrecompactedRow.java:116)
at
org.apache.cassandra.db.compaction.PrecompactedRow.<init>(PrecompactedRow.java:99)
at
org.apache.cassandra.db.compaction.CompactionController.getCompactedRow(CompactionController.java:176)
at
org.apache.cassandra.db.compaction.CompactionController.getCompactedRow(CompactionController.java:182)
at org.apache.cassandra.db.compaction.Scrubber.scrub(Scrubber.java:171)
... 1 more
Caused by: java.io.EOFException
at java.io.RandomAccessFile.readFully(RandomAccessFile.java:399)
at java.io.RandomAccessFile.readFully(RandomAccessFile.java:377)
at
org.apache.cassandra.utils.BytesReadTracker.readFully(BytesReadTracker.java:95)
at
org.apache.cassandra.utils.ByteBufferUtil.read(ByteBufferUtil.java:401)
at
org.apache.cassandra.utils.ByteBufferUtil.readWithLength(ByteBufferUtil.java:363)
at
org.apache.cassandra.db.ColumnSerializer.deserialize(ColumnSerializer.java:120)
at
org.apache.cassandra.db.ColumnSerializer.deserialize(ColumnSerializer.java:37)
at
org.apache.cassandra.db.ColumnFamilySerializer.deserializeColumns(ColumnFamilySerializer.java:144)
at
org.apache.cassandra.io.sstable.SSTableIdentityIterator.getColumnFamilyWithColumns(SSTableIdentityIterator.java:234)
at
org.apache.cassandra.db.compaction.PrecompactedRow.merge(PrecompactedRow.java:112)
... 5 more
{noformat}
Since the purpose of offline scrub is to fix broken stuff, it should be more
resilient to broken stuff...
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