[CASSANDRA-7358] Conflict between guava from Cassandra and CQL Driver

• Type: Improvement
• Status: Resolved
• Priority: Normal
• Resolution: Won't Fix
• Assignee: Unassigned
• Reporter: Alexander Radzin
• Created: 05/Jun/14 16:46
• Updated: 16/Apr/19 09:31
• Resolved: 05/Jun/14 16:50

Description

The problem is that Cassandra still depends on guava 15 while CQL Driver depends on guava 16. Attempts to run both in the same process (that is typical for embedding cassandra e.g. for unit tests) causes incompatibility problems:

java.lang.NoSuchMethodError: com.google.common.util.concurrent.RateLimiter.acquire(I)V
	at org.apache.cassandra.io.compress.CompressedThrottledReader.reBuffer(CompressedThrottledReader.java:40)
	at org.apache.cassandra.io.util.RandomAccessReader.seek(RandomAccessReader.java:280)
	at org.apache.cassandra.io.sstable.SSTableScanner$KeyScanningIterator.computeNext(SSTableScanner.java:262)
	at org.apache.cassandra.io.sstable.SSTableScanner$KeyScanningIterator.computeNext(SSTableScanner.java:203)
	at com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:143)
	at com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:138)
	at org.apache.cassandra.io.sstable.SSTableScanner.hasNext(SSTableScanner.java:183)
	at org.apache.cassandra.utils.MergeIterator$Candidate.advance(MergeIterator.java:144)
	at org.apache.cassandra.utils.MergeIterator$ManyToOne.<init>(MergeIterator.java:87)
	at org.apache.cassandra.utils.MergeIterator.get(MergeIterator.java:46)
	at org.apache.cassandra.db.compaction.CompactionIterable.iterator(CompactionIterable.java:47)
	at org.apache.cassandra.db.compaction.CompactionTask.runWith(CompactionTask.java:129)
	at org.apache.cassandra.io.util.DiskAwareRunnable.runMayThrow(DiskAwareRunnable.java:48)
	at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:28)
	at org.apache.cassandra.db.compaction.CompactionTask.executeInternal(CompactionTask.java:60)
	at org.apache.cassandra.db.compaction.AbstractCompactionTask.execute(AbstractCompactionTask.java:59)
	at org.apache.cassandra.db.compaction.CompactionManager$BackgroundCompactionTask.run(CompactionManager.java:198)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
	at java.util.concurrent.FutureTask.run(FutureTask.java:262)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:744)

Method acquire() from class com.google.common.util.concurrent.RateLimiter accepts one int parameter but its return value changed. It was void but now it is double. As far as I understand this is the reason for attached exception.

This problem does not allow us to upgrade CQL driver to version newer than 2.0.0-rc2.