8k for non-compressed files: https://github.com/apache/cassandra/blob/8b3a60b9a7dbefeecc06bace617279612ec7092d/src/java/org/apache/cassandra/io/util/ChecksummedSequentialWriter.java#L27 / https://github.com/apache/cassandra/blob/8b3a60b9a7dbefeecc06bace617279612ec7092d/src/java/org/apache/cassandra/io/util/SequentialWriterOption.java#L106
For compressed files, it's the chunk_length_kb compression parameter https://github.com/apache/cassandra/blob/8b3a60b9a7dbefeecc06bace617279612ec7092d/src/java/org/apache/cassandra/io/compress/CompressedSequentialWriter.java#L85 On Mon, Sep 25, 2017 at 10:25 PM, Tyagi, Preetika <preetika.ty...@intel.com> wrote: > Hi all, > > Does anyone know the size of each chunk/block while appending it with a > checksum when writing to the disk in Cassandra? Is it the standard 512 > bytes or it varies? > > Thanks, > Preetika > >
