BucketAllocatorException

1. 是说超过了单个bucket的大小，这个block的大小有1M多， 如果要缓存这么大的block需要调整hbase.bucketcache.bucket.sizes的配置
   /**

   • Allocate a block with specified size. Return the offset
   • @param blockSize size of block
   • @throws BucketAllocatorException,CacheFullException
   • @return the offset in the IOEngine
     */

public synchronized long allocateBlock(int blockSize) throws CacheFullException,

  BucketAllocatorException {
assert blockSize > 0;
BucketSizeInfo bsi = roundUpToBucketSizeInfo(blockSize);
if (bsi == null) {
  throw new BucketAllocatorException("Allocation too big size=" + blockSize +
    "; adjust BucketCache sizes " + CacheConfig.BUCKET_CACHE_BUCKETS_KEY +
    " to accomodate if size seems reasonable and you want it cached.");
}
long offset = bsi.allocateBlock();

// Ask caller to free up space and try again!
if (offset < 0)
  throw new CacheFullException(blockSize, bsi.sizeIndex());
usedSize += bucketSizes[bsi.sizeIndex()];
return offset;

}

1. 那个json是统计每个hfile占用的总blockcache大小
   public static String toJSON(final String filename, final NavigableSet blocks)

throws JsonGenerationException, JsonMappingException, IOException {

CachedBlockCountsPerFile counts = new CachedBlockCountsPerFile(filename);
for (CachedBlock cb: blocks) {
  counts.count++;
  counts.size += cb.getSize();
  BlockType bt = cb.getBlockType();
  if (bt != null && bt.isData()) {
    counts.countData++;
    counts.sizeData += cb.getSize();
  }
}
return MAPPER.writeValueAsString(counts);

}