Tyler Hobbs created CASSANDRA-6514:
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Summary: Nodetool Refresh / CFS.loadNewSSTables() can Lose New
SSTables
Key: CASSANDRA-6514
URL: https://issues.apache.org/jira/browse/CASSANDRA-6514
Project: Cassandra
Issue Type: Bug
Components: Core, Tools
Reporter: Tyler Hobbs
Assignee: Tyler Hobbs
Priority: Minor
When nodetool refresh / CFS.loadNewSSTables() renames the newly loaded
SSTables, it doesn't check to make sure the new name doesn't already exist.
It's easy for one of the newly loaded files themselves to have one of these
names, so the rename will wipe out one of the SSTables you intended to load.
For example, if you create a new, empty table, move two SSTables with
generations 1 and 2 into the data directory, and then call {{nodetool
refresh}}, you might see this:
{noformat}
INFO 15:37:42,587 Loading new SSTables for duration_test/ints...
INFO 15:37:42,601 Renaming new SSTable
/var/lib/cassandra/data/duration_test/ints/duration_test-ints-jb-2 to
/var/lib/cassandra/data/duration_test/ints/duration_test-ints-jb-1
INFO 15:37:42,605 Opening
/var/lib/cassandra/data/duration_test/ints/duration_test-ints-jb-1 (424005
bytes)
INFO 15:37:42,614 Renaming new SSTable
/var/lib/cassandra/data/duration_test/ints/duration_test-ints-jb-1 to
/var/lib/cassandra/data/duration_test/ints/duration_test-ints-jb-2
INFO 15:37:42,615 Opening
/var/lib/cassandra/data/duration_test/ints/duration_test-ints-jb-2 (424005
bytes)
INFO 15:37:42,617 Loading new SSTables and building secondary indexes for
duration_test/ints:
[SSTableReader(path='/var/lib/cassandra/data/duration_test/ints/duration_test-ints-jb-1-Data.db'),
SSTableReader(path='/var/lib/cassandra/data/duration_test/ints/duration_test-ints-jb-2-Data.db')]
INFO 15:37:42,618 Done loading load new SSTables for duration_test/ints
ERROR 15:38:09,428 Exception in thread Thread[ReadStage:40,5,main]
java.lang.RuntimeException: java.lang.RuntimeException:
java.io.FileNotFoundException:
/var/lib/cassandra/data/duration_test/ints/duration_test-ints-jb-1-Data.db (No
such file or directory)
at
org.apache.cassandra.service.StorageProxy$DroppableRunnable.run(StorageProxy.java:1939)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:724)
{noformat}
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