When Snappy compression is not available on the platform, trying to enable it
introduces problems
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Key: CASSANDRA-3573
URL: https://issues.apache.org/jira/browse/CASSANDRA-3573
Project: Cassandra
Issue Type: Bug
Components: Core
Affects Versions: 1.0.5
Environment: FreeBSD
Reporter: Vitalii Tymchyshyn
I've tried to enable compression for some column families in my cluster using
Snappy compression.
It does not work and I am having problems with schema updates to remove it (a
lot of UNREACHABLE nodes during scema update).
In log I have the next:
ERROR [FlushWriter:961] 2011-12-05 17:16:33,383 AbstractCassandraDaemon.java
(line 133) Fatal exception in thread Thread[Flu
shWriter:961,5,main]
java.lang.NoClassDefFoundError: Could not initialize class
org.xerial.snappy.Snappy
at
org.apache.cassandra.io.compress.SnappyCompressor.initialCompressedBufferLength(SnappyCompressor.java:39)
at
org.apache.cassandra.io.compress.CompressedSequentialWriter.<init>(CompressedSequentialWriter.java:63)
at
org.apache.cassandra.io.compress.CompressedSequentialWriter.open(CompressedSequentialWriter.java:34)
at
org.apache.cassandra.io.sstable.SSTableWriter.<init>(SSTableWriter.java:91)
at
org.apache.cassandra.db.ColumnFamilyStore.createFlushWriter(ColumnFamilyStore.java:1850)
at
org.apache.cassandra.db.Memtable.writeSortedContents(Memtable.java:250)
at org.apache.cassandra.db.Memtable.access$400(Memtable.java:47)
at org.apache.cassandra.db.Memtable$4.runMayThrow(Memtable.java:291)
at
org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:30)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:679)
It looks like Snappy can't initialize because it does not have native library
for my platform. It would be great if:
1) A check be done on schema update if Snappy can be used
2) If it is enabled and can't be used it would still work without compression
writes (but may be outputting some errors to indicate the situation)
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