unsubscribe On Mon, Apr 24, 2017 at 3:30 AM, Marcel Hylkema < marcel.hylkema....@gmail.com> wrote:
> Hi, > > We are loading SSTable files of different sizes (1 to a few 100,000 > records each) into Cassandra (v3.9 on CentOS 7) using JMX bulkload. > > Part of the files result in the following root cause exception: > > Caused by: java.lang.AssertionError > at org.apache.cassandra.cache.ChunkCache$CachingRebufferer.< > init>(ChunkCache.java:223) > at org.apache.cassandra.cache.ChunkCache.wrap(ChunkCache.java:176) > at org.apache.cassandra.cache.ChunkCache.maybeWrap( > ChunkCache.java:184) > at org.apache.cassandra.io.util.BufferedSegmentedFile. > createRebufferer(BufferedSegmentedFile.java:42) > at org.apache.cassandra.io.util.BufferedSegmentedFile.<init>( > BufferedSegmentedFile.java:27) > at org.apache.cassandra.io.util.BufferedSegmentedFile$Builder. > complete(BufferedSegmentedFile.java:50) > at org.apache.cassandra.io.util.SegmentedFile$Builder. > complete(SegmentedFile.java:181) > at org.apache.cassandra.io.util.SegmentedFile$Builder. > buildIndex(SegmentedFile.java:207) > at org.apache.cassandra.io.sstable.format.SSTableReader. > openForBatch(SSTableReader.java:441) > > > Following the traces I see the following: > - In org.apache.cassandra.io.util.SegmentedFile$Builder.buffersize(line > 226) Cassandra creates a buffer based on the Index file size with a > size that is a multiple of 4k larger than the file size with a max of > 64k. > - At org.apache.cassandra.cache.ChunkCache$CachingRebufferer.< > init>(ChunkCache.java:223), > there is a check if the buffer size is a multiple of 2. > > When trying to load an SSTable with an Index file that is say between > 9000 and 10000 bytes, the buffer size may become 12k. > But this is not a multiple of 2 and hence the exception. > > Does anyone have a resolution for this or should I report a bug? > > Regards, > Marcel >
