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https://issues.apache.org/jira/browse/CASSANDRA-9573?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14581324#comment-14581324
]
Alan Boudreault commented on CASSANDRA-9573:
--------------------------------------------
Tried to delete all my jna jars and add "-Dcassandra.boot_without_jna=true" but
getting the following error. I'll check more tomorrow morning.
{code}
java.lang.NoClassDefFoundError: com/sun/jna/Native
at
org.apache.cassandra.utils.memory.MemoryUtil.allocate(MemoryUtil.java:82)
~[main/:na]
at org.apache.cassandra.io.util.Memory.<init>(Memory.java:74)
~[main/:na]
at org.apache.cassandra.io.util.SafeMemory.<init>(SafeMemory.java:32)
~[main/:na]
at
org.apache.cassandra.io.compress.CompressionMetadata$Writer.<init>(CompressionMetadata.java:274)
~[main/:na]
at
org.apache.cassandra.io.compress.CompressionMetadata$Writer.open(CompressionMetadata.java:288)
~[main/:na]
at
org.apache.cassandra.io.compress.CompressedSequentialWriter.<init>(CompressedSequentialWriter.java:73)
~[main/:na]
at
org.apache.cassandra.io.util.SequentialWriter.open(SequentialWriter.java:167)
~[main/:na]
at
org.apache.cassandra.io.sstable.format.big.BigTableWriter.<init>(BigTableWriter.java:75)
~[main/:na]
at
org.apache.cassandra.io.sstable.format.big.BigFormat$WriterFactory.open(BigFormat.java:107)
~[main/:na]
at
org.apache.cassandra.io.sstable.format.SSTableWriter.create(SSTableWriter.java:84)
~[main/:na]
at
org.apache.cassandra.db.Memtable$FlushRunnable.createFlushWriter(Memtable.java:419)
~[main/:na]
at
org.apache.cassandra.db.Memtable$FlushRunnable.writeSortedContents(Memtable.java:366)
~[main/:na]
at
org.apache.cassandra.db.Memtable$FlushRunnable.runMayThrow(Memtable.java:351)
~[main/:na]
at
org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:28)
~[main/:na]
at
com.google.common.util.concurrent.MoreExecutors$SameThreadExecutorService.execute(MoreExecutors.java:297)
~[guava-16.0.jar:na]
at
org.apache.cassandra.db.ColumnFamilyStore$Flush.run(ColumnFamilyStore.java:1121)
~[main/:na]
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
~[na:1.7.0_76]
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
~[na:1.7.0_76]
at java.lang.Thread.run(Thread.java:745) ~[na:1.7.0_76]
Caused by: java.lang.ClassNotFoundException: com.sun.jna.Native
at java.net.URLClassLoader$1.run(URLClassLoader.java:366) ~[na:1.7.0_76]
at java.net.URLClassLoader$1.run(URLClassLoader.java:355) ~[na:1.7.0_76]
at java.security.AccessController.doPrivileged(Native Method)
~[na:1.7.0_76]
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
~[na:1.7.0_76]
at java.lang.ClassLoader.loadClass(ClassLoader.java:425) ~[na:1.7.0_76]
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
~[na:1.7.0_76]
at java.lang.ClassLoader.loadClass(ClassLoader.java:358) ~[na:1.7.0_76]
... 19 common frames omitted
{code}
> OOM when loading compressed sstables (system.hints)
> ---------------------------------------------------
>
> Key: CASSANDRA-9573
> URL: https://issues.apache.org/jira/browse/CASSANDRA-9573
> Project: Cassandra
> Issue Type: Bug
> Reporter: Alan Boudreault
> Assignee: Benedict
> Priority: Critical
> Fix For: 2.2.0 rc2
>
> Attachments: hs_err_pid11243.log,
> java-hints-issue-2015-06-09.snapshot, system.log, yourkit.ss.tar.gz
>
>
> [~andrew.tolbert] discovered an issue while running endurance tests on 2.2. A
> Node was not able to start and was killed by the OOM Killer.
> Briefly, Cassandra use an excessive amount of memory when loading compressed
> sstables (off-heap?). We have initially seen the issue with system.hints
> before knowing it was related to compression. system.hints use lz4
> compression by default. If we have a sstable of, say 8-10G, Cassandra will be
> killed by the OOM killer after 1-2 minutes. I can reproduce that bug
> everytime locally.
> * the issue also happens if we have 10G of data splitted in 13MB sstables.
> * I can reproduce the issue if I put a lot of data in the system.hints table.
> * I cannot reproduce the issue with a standard table using the same
> compression (LZ4). Something seems to be different when it's hints?
> You wont see anything in the node system.log but you'll see this in
> /var/log/syslog.log:
> {code}
> Out of memory: Kill process 30777 (java) score 600 or sacrifice child
> {code}
> The issue has been introduced in this commit but is not related to the
> performance issue in CASSANDRA-9240:
> https://github.com/apache/cassandra/commit/aedce5fc6ba46ca734e91190cfaaeb23ba47a846
> Here is the core dump and some yourkit snapshots in attachments. I am not
> sure you will be able to get useful information from them.
> core dump: http://dl.alanb.ca/core.tar.gz
> Not sure if this is related, but all dumps and snapshot points to
> EstimatedHistogramReservoir ... and we can see many
> javax.management.InstanceAlreadyExistsException:
> org.apache.cassandra.metrics:... exceptions in system.log before it hangs
> then crash.
> To reproduce the issue:
> 1. created a cluster of 3 nodes
> 2. start the whole cluster
> 3. shutdown node2 and node3
> 4. writes 10-15G of data on node1 with replication factor 3. You should see a
> lot of hints.
> 5. stop node1
> 6. start node2 and node3
> 7. start node1, you should OOM.
> //cc [~tjake] [~benedict] [~andrew.tolbert]
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