Hey there, I've been running a cluster for over a year and was getting a lzo decompressing exception less than once a month. Suddenly it happens almost once per day. Any ideas what could be causing it? I'm with hadoop 0.20.2 I've thought in moving to snappy but would like to know why this happens more often now
The exception happens always when the reducer gets data from the map and looks like: Error: java.lang.InternalError: lzo1x_decompress returned: -8 at com.hadoop.compression.lzo.LzoDecompressor.decompressBytesDirect(Native Method) at com.hadoop.compression.lzo.LzoDecompressor.decompress(LzoDecompressor.java:305) at org.apache.hadoop.io.compress.BlockDecompressorStream.decompress(BlockDecompressorStream.java:76) at org.apache.hadoop.io.compress.DecompressorStream.read(DecompressorStream.java:75) at org.apache.hadoop.mapred.ReduceTask$ReduceCopier$MapOutputCopier.shuffleInMemory(ReduceTask.java:1553) at org.apache.hadoop.mapred.ReduceTask$ReduceCopier$MapOutputCopier.getMapOutput(ReduceTask.java:1432) at org.apache.hadoop.mapred.ReduceTask$ReduceCopier$MapOutputCopier.copyOutput(ReduceTask.java:1285) at org.apache.hadoop.mapred.ReduceTask$ReduceCopier$MapOutputCopier.run(ReduceTask.java:1216) Thanks in advance. -- View this message in context: http://lucene.472066.n3.nabble.com/LZO-exception-decompressing-returned-8-tp3783652p3783652.html Sent from the Hadoop lucene-users mailing list archive at Nabble.com.