An additional point - we just added the system_* methods and this test class does an add, rename then drop for both CF and keyspace.
On 9/18/10, Ran Tavory <ran...@gmail.com> wrote: > I started seeing OOM when running hector's unit-tests on 0.7.0. The OOM is > in cassandra's code so either there had been recent changes within cassandra > or it's just that we added new coverage which causes this OOM. > > On my mac it's 100% repro but other hector devs have reported they don't get > this OOM. Moreover, it I place a Thread.sleep(5000) in one of the tests the > OOM goes away (but other errors are still present see more below) > > To reproduce the error you may checkout hector from > http://github.com/rantav/hector, switch to the 0.7.0 branch and run: > > $ MAVEN_OPTS="-Xmx1G -Xms256M -XX:+UseParNewGC -XX:+UseConcMarkSweepGC > -XX:+CMSParallelRemarkEnabled -XX:SurvivorRatio=8 > -XX:MaxTenuringThreshold=1" *mvn test -Dtest=CassandraClusterTest* > > (I'm using the default memory settings from 0.7.0) > > The test class source code is here > http://github.com/rantav/hector/blob/0.7.0/src/test/java/me/prettyprint/cassandra/service/CassandraClusterTest.java > > This test basically adds, removes, renames keyspaces etc. > > Here's the OOM log: > > 18:07:04,197 INFO ColumnFamilyStore:734 - Enqueuing flush of > memtable-sch...@72177013(3455 bytes, 3 operations) > 18:07:04,487 ERROR AbstractCassandraDaemon:88 - Fatal exception in thread > Thread[FLUSH-WRITER-POOL:1,5,main] > java.util.concurrent.ExecutionException: java.lang.OutOfMemoryError: Java > heap space > at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:222) > at java.util.concurrent.FutureTask.get(FutureTask.java:83) > at > org.apache.cassandra.concurrent.DebuggableThreadPoolExecutor.afterExecute(DebuggableThreadPoolExecutor.java:87) > at > java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:888) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) > at java.lang.Thread.run(Thread.java:637) > Caused by: java.lang.OutOfMemoryError: Java heap space > at > org.apache.cassandra.io.util.BufferedRandomAccessFile.init(BufferedRandomAccessFile.java:151) > at > org.apache.cassandra.io.util.BufferedRandomAccessFile.<init>(BufferedRandomAccessFile.java:144) > at > org.apache.cassandra.io.sstable.SSTableWriter.<init>(SSTableWriter.java:61) > at org.apache.cassandra.db.Memtable.writeSortedContents(Memtable.java:151) > at org.apache.cassandra.db.Memtable.access$000(Memtable.java:44) > at org.apache.cassandra.db.Memtable$1.runMayThrow(Memtable.java:168) > at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:30) > at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) > at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) > at java.util.concurrent.FutureTask.run(FutureTask.java:138) > at > java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) > ... 2 more > 18:07:04,491 INFO Memtable:150 - Writing memtable-sch...@72177013(3455 > bytes, 3 operations) > 18:07:04,812 INFO CompactionManager:323 - Compacted to > /Users/ran/dev/cassandra/hector/tmp/var/lib/cassandra/data/system/Schema-tmp-e-6-Data.db. > 15,707 to 15,173 (~96% of original) bytes for 5 keys. Time: 860ms. > 18:07:04,812 ERROR AbstractCassandraDaemon:88 - Fatal exception in thread > Thread[FLUSH-WRITER-POOL:1,5,main] > java.util.concurrent.ExecutionException: java.lang.OutOfMemoryError: Java > heap space > at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:222) > at java.util.concurrent.FutureTask.get(FutureTask.java:83) > at > org.apache.cassandra.concurrent.DebuggableThreadPoolExecutor.afterExecute(DebuggableThreadPoolExecutor.java:87) > at > java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:888) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) > at java.lang.Thread.run(Thread.java:637) > Caused by: java.lang.OutOfMemoryError: Java heap space > at > org.apache.cassandra.io.util.BufferedRandomAccessFile.init(BufferedRandomAccessFile.java:151) > at > org.apache.cassandra.io.util.BufferedRandomAccessFile.<init>(BufferedRandomAccessFile.java:144) > at > org.apache.cassandra.io.sstable.SSTableWriter.<init>(SSTableWriter.java:61) > at org.apache.cassandra.db.Memtable.writeSortedContents(Memtable.java:151) > at org.apache.cassandra.db.Memtable.access$000(Memtable.java:44) > at org.apache.cassandra.db.Memtable$1.runMayThrow(Memtable.java:168) > at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:30) > at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) > at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) > at java.util.concurrent.FutureTask.run(FutureTask.java:138) > at > java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) > ... 2 more > > > Here the log after I place a sleep(5000) at this line > http://github.com/rantav/hector/blob/0.7.0/src/test/java/me/prettyprint/cassandra/service/CassandraClusterTest.java#L88 > The file-not-found error is even more suspicious... > > 18:04:28,293 ERROR AbstractCassandraDaemon:88 - Fatal exception in thread > Thread[CompactionExecutor:1,1,main] > java.util.concurrent.ExecutionException: java.io.FileNotFoundException: > /Users/ran/dev/cassandra/hector/tmp/var/lib/cassandra/data/system/Schema-tmp-e-7-Filter.db > (No such file or directory) > at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:222) > at java.util.concurrent.FutureTask.get(FutureTask.java:83) > at > org.apache.cassandra.concurrent.DebuggableThreadPoolExecutor.afterExecute(DebuggableThreadPoolExecutor.java:87) > at > org.apache.cassandra.db.CompactionManager$CompactionExecutor.afterExecute(CompactionManager.java:604) > at > java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:888) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) > at java.lang.Thread.run(Thread.java:637) > Caused by: java.io.FileNotFoundException: > /Users/ran/dev/cassandra/hector/tmp/var/lib/cassandra/data/system/Schema-tmp-e-7-Filter.db > (No such file or directory) > at java.io.FileOutputStream.open(Native Method) > at java.io.FileOutputStream.<init>(FileOutputStream.java:179) > at java.io.FileOutputStream.<init>(FileOutputStream.java:70) > at > org.apache.cassandra.io.sstable.SSTableWriter$IndexWriter.close(SSTableWriter.java:382) > at > org.apache.cassandra.io.sstable.SSTableWriter.closeAndOpenReader(SSTableWriter.java:144) > at > org.apache.cassandra.db.CompactionManager.doCompaction(CompactionManager.java:314) > at > org.apache.cassandra.db.CompactionManager$1.call(CompactionManager.java:107) > at > org.apache.cassandra.db.CompactionManager$1.call(CompactionManager.java:88) > at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) > at java.util.concurrent.FutureTask.run(FutureTask.java:138) > at > java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) > ... 2 more > > > $ java -version > java version "1.6.0_20" > Java(TM) SE Runtime Environment (build 1.6.0_20-b02-279-9M3165) > Java HotSpot(TM) 64-Bit Server VM (build 16.3-b01-279, mixed mode) >
