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From "Stefania (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-10538) Assertion failed in LogFile when disk is full
Date Fri, 16 Oct 2015 03:11:05 GMT
Stefania created CASSANDRA-10538:
------------------------------------

             Summary: Assertion failed in LogFile when disk is full
                 Key: CASSANDRA-10538
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10538
             Project: Cassandra
          Issue Type: Bug
            Reporter: Stefania
            Assignee: Stefania
             Fix For: 3.x
         Attachments: ma_txn_compaction_67311da0-72b4-11e5-9eb9-b14fa4bbe709.log, ma_txn_compaction_696059b0-72b4-11e5-9eb9-b14fa4bbe709.log,
ma_txn_compaction_8ac58b70-72b4-11e5-9eb9-b14fa4bbe709.log, ma_txn_compaction_8be24610-72b4-11e5-9eb9-b14fa4bbe709.log,
ma_txn_compaction_95500fc0-72b4-11e5-9eb9-b14fa4bbe709.log, ma_txn_compaction_a41caa90-72b4-11e5-9eb9-b14fa4bbe709.log

[~carlyeks] was running a stress job which filled up the disk. At the end of the system logs
there are several assertion errors:

{code}
ERROR [CompactionExecutor:1] 2015-10-14 20:46:55,467 CassandraDaemon.java:195 - Exception
in thread Thread[CompactionExecutor:1,1,main]
java.lang.RuntimeException: Insufficient disk space to write 2097152 bytes
        at org.apache.cassandra.db.compaction.writers.CompactionAwareWriter.getWriteDirectory(CompactionAwareWriter.java:156)
~[main/:na]
        at org.apache.cassandra.db.compaction.writers.MaxSSTableSizeWriter.realAppend(MaxSSTableSizeWriter.java:77)
~[main/:na]
        at org.apache.cassandra.db.compaction.writers.CompactionAwareWriter.append(CompactionAwareWriter.java:110)
~[main/:na]
        at org.apache.cassandra.db.compaction.CompactionTask.runMayThrow(CompactionTask.java:182)
~[main/:na]
        at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:28) ~[main/:na]
        at org.apache.cassandra.db.compaction.CompactionTask.executeInternal(CompactionTask.java:78)
~[main/:na]
        at org.apache.cassandra.db.compaction.AbstractCompactionTask.execute(AbstractCompactionTask.java:61)
~[main/:na]
        at org.apache.cassandra.db.compaction.CompactionManager$BackgroundCompactionCandidate.run(CompactionManager.java:220)
~[main/:na]
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[na:1.8.0_40]
        at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[na:1.8.0_40]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
~[na:1.8.0_40]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
[na:1.8.0_40]
        at java.lang.Thread.run(Thread.java:745) [na:1.8.0_40]
INFO  [IndexSummaryManager:1] 2015-10-14 21:10:40,099 IndexSummaryManager.java:257 - Redistributing
index summaries
ERROR [IndexSummaryManager:1] 2015-10-14 21:10:42,275 CassandraDaemon.java:195 - Exception
in thread Thread[IndexSummaryManager:1,1,main]
java.lang.AssertionError: Already completed!
        at org.apache.cassandra.db.lifecycle.LogFile.abort(LogFile.java:221) ~[main/:na]
        at org.apache.cassandra.db.lifecycle.LogTransaction.doAbort(LogTransaction.java:376)
~[main/:na]
        at org.apache.cassandra.utils.concurrent.Transactional$AbstractTransactional.abort(Transactional.java:144)
~[main/:na]
        at org.apache.cassandra.db.lifecycle.LifecycleTransaction.doAbort(LifecycleTransaction.java:259)
~[main/:na]
        at org.apache.cassandra.utils.concurrent.Transactional$AbstractTransactional.abort(Transactional.java:144)
~[main/:na]
        at org.apache.cassandra.utils.concurrent.Transactional$AbstractTransactional.abort(Transactional.java:193)
~[main/:na]
        at org.apache.cassandra.utils.concurrent.Transactional$AbstractTransactional.close(Transactional.java:158)
~[main/:na]
        at org.apache.cassandra.io.sstable.IndexSummaryManager.redistributeSummaries(IndexSummaryManager.java:242)
~[main/:na]
        at org.apache.cassandra.io.sstable.IndexSummaryManager$1.runMayThrow(IndexSummaryManager.java:134)
~[main/:na]
        at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:28) ~[main/:na]
        at org.apache.cassandra.concurrent.DebuggableScheduledThreadPoolE
{code}

We should not have an assertion if it can happen when the disk is full, we should rather have
a runtime exception.

I also would like to understand exactly what triggered the assertion. {{LifecycleTransaction}}
can throw at the beginning of the commit method if it cannot write the record to disk, in
which case all we have to do is ensure we update the records in memory after writing to disk
(currently we update them before). However, I am not sure this is what happened here, it looks
more like abort was called twice, which should never happen.



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