message: Always use diskdown 32-byte keys
diff: @@ -13,6 +13,7 @@ import Combined from './store/Combined';
  // import Scatter from './store/Scatter';
  const LRU_SIZE = 8192;
  +const KEY_LENGTH = 32;
  const l = logger('disk/scatter');
  const noop = () =>
  @@ -85,6 +86,20 @@ class DiskDown extends AbstractLevelDOWN {
  process.nextTick(callback);
  }
  +
  + _serializeKey (key: Buffer): Buffer {
  + if (key.length === KEY_LENGTH) {
  + return key;
  + } else if (key.length < KEY_LENGTH) {
  + const paddedKey = Buffer.alloc(KEY_LENGTH);
  +
  + paddedKey.set(key, 0);
  +
  + return paddedKey;
  + }
  +
  + throw new Error(`${key.toString()} too large, expected <= 32 bytes`);
  + }
  }
  export default function (location: string) {
  