Method PunchHole

be/src/runtime/io/data-cache.cc:298–311

  }

  void PunchHole(int64_t offset, int64_t hole_size) {
    DCHECK_EQ(offset % PAGE_SIZE, 0);
    DCHECK_EQ(hole_size % PAGE_SIZE, 0);
    if (UNLIKELY(readonly_.Load())) return;
    // Hold the lock in shared mode to check if 'file_' is not closed already.
    kudu::shared_lock<rw_spinlock> lock(lock_.get_lock());
    if (UNLIKELY(!file_ || readonly_.Load())) return;
    DCHECK_LE(offset + hole_size, current_offset_.Load());
    kudu::Status status = file_->PunchHole(offset, hole_size);
    if (UNLIKELY(!status.ok())) {
      LOG(DFATAL) << Substitute("Failed to punch hole in $0 at offset $1 for $2 $3",
          path_, offset, PrettyPrinter::PrintBytes(hole_size), status.ToString());
    }
  }

  Status Flush() {
    std::unique_lock<percpu_rwlock> lock(lock_);