[jira] [Created] (HBASE-23264) Resolve a TODO of BucketAllocator: "Why we add the extra 1024 bytes? Slop?"

["Zheng Wang (Jira)" <ji...@apache.org>]

Zheng Wang created HBASE-23264:
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             Summary: Resolve a TODO of BucketAllocator: "Why we add the extra 1024 bytes? Slop?"
                 Key: HBASE-23264
                 URL: https://issues.apache.org/jira/browse/HBASE-23264
             Project: HBase
          Issue Type: Improvement
          Components: BucketCache
            Reporter: Zheng Wang


{code:java}
// TODO: Why we add the extra 1024 bytes? Slop?
private static final int DEFAULT_BUCKET_SIZES[] = { 4 * 1024 + 1024, 8 * 1024 + 1024,
 16 * 1024 + 1024, 32 * 1024 + 1024, 40 * 1024 + 1024, 48 * 1024 + 1024,
 56 * 1024 + 1024, 64 * 1024 + 1024, 96 * 1024 + 1024, 128 * 1024 + 1024,
 192 * 1024 + 1024, 256 * 1024 + 1024, 384 * 1024 + 1024,
 512 * 1024 + 1024 };{code}
The real block size in hile may exceed a little than the size we configed ,so we need add extra 1024 bytes for fit.



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