[CASSANDRA-8631] long-test MeteredFlusherTest fails with heap OOM

• Type: Improvement
• Status: Resolved
• Priority: Low
• Resolution: Fixed
• Component/s: Legacy/Testing
• Labels: unit-test

Environment

cassandra-2.0 commit 90780b5

• Assignee: Benedict Elliott Smith
• Reporter: Michael Shuler

Authors

Benedict Elliott Smith

• Created: 15/Jan/15 20:20
• Updated: 16/Apr/19 09:31
• Resolved: 28/Jan/15 22:40

Description

I attempted to find a spot where this test actually passes, and I was unable to do so. I tried back to 1.1 HEAD and various release tags under jdk7 and jdk6 for <= 1.2 tags. In 1.2.0 with jdk6, the test times out with java.lang.OutOfMemoryError: GC overhead limit exceeded, so it's similar.

    [junit] Testcase: testManyMemtables(org.apache.cassandra.db.MeteredFlusherTest):    Caused an ERROR
    [junit] Java heap space
    [junit] java.lang.OutOfMemoryError: Java heap space
    [junit]     at java.nio.HeapByteBuffer.<init>(HeapByteBuffer.java:57)
    [junit]     at java.nio.ByteBuffer.allocate(ByteBuffer.java:331)
    [junit]     at org.apache.cassandra.utils.SlabAllocator$Region.<init>(SlabAllocator.java:157)
    [junit]     at org.apache.cassandra.utils.SlabAllocator$Region.<init>(SlabAllocator.java:131)
    [junit]     at org.apache.cassandra.utils.SlabAllocator.getRegion(SlabAllocator.java:101)
    [junit]     at org.apache.cassandra.utils.SlabAllocator.allocate(SlabAllocator.java:73)
    [junit]     at org.apache.cassandra.utils.Allocator.clone(Allocator.java:30)
    [junit]     at org.apache.cassandra.db.Column.localCopy(Column.java:277)
    [junit]     at org.apache.cassandra.db.Memtable$1.apply(Memtable.java:114)
    [junit]     at org.apache.cassandra.db.Memtable$1.apply(Memtable.java:111)
    [junit]     at org.apache.cassandra.db.AtomicSortedColumns.addAllWithSizeDelta(AtomicSortedColumns.java:194)
    [junit]     at org.apache.cassandra.db.Memtable.resolve(Memtable.java:218)
    [junit]     at org.apache.cassandra.db.Memtable.put(Memtable.java:165)
    [junit]     at org.apache.cassandra.db.ColumnFamilyStore.apply(ColumnFamilyStore.java:901)
    [junit]     at org.apache.cassandra.db.Keyspace.apply(Keyspace.java:374)
    [junit]     at org.apache.cassandra.db.Keyspace.apply(Keyspace.java:339)
    [junit]     at org.apache.cassandra.db.RowMutation.applyUnsafe(RowMutation.java:216)
    [junit]     at org.apache.cassandra.db.MeteredFlusherTest.testManyMemtables(MeteredFlusherTest.java:59)
    [junit] 
    [junit] 
    [junit] Test org.apache.cassandra.db.MeteredFlusherTest FAILED