Tom van der Woerdt created CASSANDRA-15242:
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Summary: Race condition between flushing and compaction stalls
compaction indefinitely
Key: CASSANDRA-15242
URL: https://issues.apache.org/jira/browse/CASSANDRA-15242
Project: Cassandra
Issue Type: Bug
Components: Local/Compaction/LCS
Reporter: Tom van der Woerdt
Seen on Cassandra 3.11.4 with OpenJDK 8u212, although I've seen this a few
times before, also on 3.11.3. It's a rare issue so I've not bothered with
trying to trace it until now.
{noformat}
DEBUG [NativePoolCleaner] 2019-07-18 01:12:41,799 ColumnFamilyStore.java:1325 -
Flushing largest CFS(Keyspace='keyspacename', ColumnFamily='tablename') to free
up room. Used total: 0.10/0.33, live: 0.10/0.33, flushing: 0.00/0.00, this:
0.09/0.19
DEBUG [NativePoolCleaner] 2019-07-18 01:12:41,800 ColumnFamilyStore.java:935 -
Enqueuing flush of tablename: 267.930MiB (9%) on-heap, 575.580MiB (19%) off-heap
DEBUG [PerDiskMemtableFlushWriter_0:204] 2019-07-18 01:12:42,480
Memtable.java:456 - Writing Memtable-tablename@498336646(520.721MiB serialized
bytes, 870200 ops, 9%/19% of on/off-heap limit), flushed range =
(min(-9223372036854775808), max(9223372036854775807)]
INFO [Service Thread] 2019-07-18 01:12:43,616 GCInspector.java:284 - G1 Young
Generation GC in 227ms. G1 Eden Space: 14713618432 -> 0; G1 Old Gen:
13240876928 -> 13259198848; G1 Survivor Space: 276824064 -> 268435456;
INFO [Service Thread] 2019-07-18 01:12:56,251 GCInspector.java:284 - G1 Young
Generation GC in 206ms. G1 Eden Space: 14713618432 -> 0; G1 Old Gen:
13259198848 -> 13285123456; G1 Survivor Space: 268435456 -> 285212672;
DEBUG [PerDiskMemtableFlushWriter_0:204] 2019-07-18 01:12:56,693
Memtable.java:485 - Completed flushing
/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292358-big-Data.db
(524.023MiB) for commitlog position CommitLogPosition(segmentId=1563386911266,
position=32127822)
DEBUG [MemtableFlushWriter:204] 2019-07-18 01:12:57,620
ColumnFamilyStore.java:1233 - Flushed to
[BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292358-big-Data.db')]
(1 sstables, 518.714MiB), biggest 518.714MiB, smallest 518.714MiB
WARN [CompactionExecutor:1617] 2019-07-18 01:12:57,628
LeveledCompactionStrategy.java:144 - Could not acquire references for
compacting SSTables
[BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292348-big-Data.db'),
BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292358-big-Data.db')]
which is not a problem per se,unless it happens frequently, in which case it
must be reported. Will retry later.
{noformat}
This final line then starts repeating about once per minute:
{noformat}
WARN [CompactionExecutor:1610] 2019-07-18 01:13:18,898
LeveledCompactionStrategy.java:144 - Could not acquire references for
compacting SSTables
[BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292348-big-Data.db'),
BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292358-big-Data.db')]
which is not a problem per se,unless it happens frequently, in which case it
must be reported. Will retry later.
WARN [CompactionExecutor:1611] 2019-07-18 01:14:18,899
LeveledCompactionStrategy.java:144 - Could not acquire references for
compacting SSTables
[BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292348-big-Data.db'),
BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292358-big-Data.db')]
which is not a problem per se,unless it happens frequently, in which case it
must be reported. Will retry later.
WARN [CompactionExecutor:1622] 2019-07-18 01:15:18,899
LeveledCompactionStrategy.java:144 - Could not acquire references for
compacting SSTables
[BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292348-big-Data.db'),
BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292358-big-Data.db')]
which is not a problem per se,unless it happens frequently, in which case it
must be reported. Will retry later.
WARN [CompactionExecutor:1436] 2019-07-18 01:16:15,073
LeveledCompactionStrategy.java:144 - Could not acquire references for
compacting SSTables
[BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292348-big-Data.db'),
BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292358-big-Data.db')]
which is not a problem per se,unless it happens frequently, in which case it
must be reported. Will retry later.
WARN [CompactionExecutor:1618] 2019-07-18 01:16:18,899
LeveledCompactionStrategy.java:144 - Could not acquire references for
compacting SSTables
[BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292348-big-Data.db'),
BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292358-big-Data.db')]
which is not a problem per se,unless it happens frequently, in which case it
must be reported. Will retry later.
WARN [CompactionExecutor:1611] 2019-07-18 01:17:18,900
LeveledCompactionStrategy.java:144 - Could not acquire references for
compacting SSTables
[BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292348-big-Data.db'),
BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292358-big-Data.db')]
which is not a problem per se,unless it happens frequently, in which case it
must be reported. Will retry later.
WARN [CompactionExecutor:1606] 2019-07-18 01:18:18,900
LeveledCompactionStrategy.java:144 - Could not acquire references for
compacting SSTables
[BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292348-big-Data.db'),
BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292358-big-Data.db')]
which is not a problem per se,unless it happens frequently, in which case it
must be reported. Will retry later.
WARN [CompactionExecutor:1630] 2019-07-18 01:19:18,902
LeveledCompactionStrategy.java:144 - Could not acquire references for
compacting SSTables
[BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292348-big-Data.db'),
BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292358-big-Data.db')]
which is not a problem per se,unless it happens frequently, in which case it
must be reported. Will retry later.
WARN [CompactionExecutor:1627] 2019-07-18 01:20:18,904
LeveledCompactionStrategy.java:144 - Could not acquire references for
compacting SSTables
[BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292348-big-Data.db'),
BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292358-big-Data.db')]
which is not a problem per se,unless it happens frequently, in which case it
must be reported. Will retry later.
WARN [CompactionExecutor:1638] 2019-07-18 01:21:18,904
LeveledCompactionStrategy.java:144 - Could not acquire references for
compacting SSTables
[BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292348-big-Data.db'),
BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292358-big-Data.db')]
which is not a problem per se,unless it happens frequently, in which case it
must be reported. Will retry later.
WARN [CompactionExecutor:1631] 2019-07-18 01:22:18,905
LeveledCompactionStrategy.java:144 - Could not acquire references for
compacting SSTables
[BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292348-big-Data.db'),
BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292358-big-Data.db')]
which is not a problem per se,unless it happens frequently, in which case it
must be reported. Will retry later.
WARN [CompactionExecutor:1636] 2019-07-18 01:22:58,220
LeveledCompactionStrategy.java:144 - Could not acquire references for
compacting SSTables
[BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292363-big-Data.db'),
BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292348-big-Data.db'),
BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292358-big-Data.db'),
BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292342-big-Data.db'),
BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292344-big-Data.db'),
BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292343-big-Data.db'),
BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292340-big-Data.db'),
BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292338-big-Data.db'),
BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292336-big-Data.db'),
BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292335-big-Data.db'),
BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292337-big-Data.db'),
BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292346-big-Data.db'),
BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292349-big-Data.db')]
which is not a problem per se,unless it happens frequently, in which case it
must be reported. Will retry later.
WARN [CompactionExecutor:1625] 2019-07-18 01:23:18,905
LeveledCompactionStrategy.java:144 - Could not acquire references for
compacting SSTables
[BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292363-big-Data.db'),
BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292348-big-Data.db'),
BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292358-big-Data.db'),
BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292342-big-Data.db'),
BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292344-big-Data.db'),
BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292343-big-Data.db'),
BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292340-big-Data.db'),
BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292338-big-Data.db'),
BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292336-big-Data.db'),
BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292335-big-Data.db'),
BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292337-big-Data.db'),
BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292346-big-Data.db'),
BigTableReader(path='/cassandra-data/data/keyspacename/tablename-2c5325e042e911e8a07e9db72d27cf67/md-292349-big-Data.db')]
which is not a problem per se,unless it happens frequently, in which case it
must be reported. Will retry later.{noformat}
It will keep going like this for days, until restarted, but compaction won't
run until then, so sstables pile up.
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