}

  private fun corruptMetadata(corruptor: (String) -> String) {
    val metadataFile =
      fileSystem.allPaths.find {
        it.name.endsWith(".0")
      }

    if (metadataFile != null) {
      val contents =
        fileSystem.read(metadataFile) {
          readUtf8()
        }

      fileSystem.write(metadataFile) {
        writeUtf8(corruptor(contents))
      }
    }
  }

			metaErrs[i] = errDiskNotFound
			continue
		}

		meta := partsMetadata[i]
		corrupted := false
		if filterByETag {
			corrupted = meta.Metadata["etag"] != latestMeta.Metadata["etag"]
		} else {
			corrupted = !meta.ModTime.Equal(latestMeta.ModTime) || meta.DataDir != latestMeta.DataDir
		}

		if corrupted {
			metaErrs[i] = errFileCorrupt
			partsMetadata[i] = FileInfo{}
			onlineDisks[i] = nil

MinIO protects data against hardware failures and silent data corruption using erasure code and checksums. With the highest level of redundancy, you may lose up to half (N/2) of the total drives and still be able to recover the data.

## What is Erasure Code?

				notFoundCount++
			} else if isErrBucketNotFound(err) {
				notFoundCount++
			}
		}
	}
	return len(errs) == notFoundCount
}

// ObjectDir is considered dangling/corrupted if any only
// if total disks - a combination of corrupted and missing
// files is lesser than N/2+1 number of disks.
// If no files were found false will be returned.
func isObjectDirDangling(errs []error) (ok bool) {
	var found int

        // Choice here is between failing with a correct RuntimeException
        // or mostly silently with an IOException
        url = urlLine.toHttpUrlOrNull() ?: throw IOException("Cache corruption for $urlLine").also {
          Platform.get().log("cache corruption", WARN, it)
        }
        requestMethod = source.readUtf8LineStrict()
        val varyHeadersBuilder = Headers.Builder()
        val varyRequestHeaderLineCount = readInt(source)

				}
				partsMD5Sum = append(partsMD5Sum, h.Sum(nil))
			}

			if failedMD5 {
				log.Println("CORRUPTED object:", objFullPath(object))
				continue
			}

			corrupted := false
			if !multipart {
				md5sum := fmt.Sprintf("%x", partsMD5Sum[0])
				if md5sum != object.ETag {
					corrupted = true
				}
			} else {
				var totalMD5SumBytes []byte
				for _, sum := range partsMD5Sum {

- Any JBOD inconsistent - return failure
- Some are corrupt (missing format.json) - return failure
- Any unrecognized disks - return failure

Some disks are offline and we have quorum.
-----------------
- Some unformatted - format all and return success,
  treat disks offline as corrupted.
- Any JBOD inconsistent - return failure
- Some are corrupt (missing format.json)
- Any unrecognized disks - return failure

    Collection<V> values = multimap().get(k3());
    if (values.size() == 0) {
      expectUnchanged();
      // Be extra thorough in case internal state was corrupted by the expected null.
      assertEquals(new ArrayList<>(), new ArrayList<>(values));
      assertEquals(size, multimap().size());
    } else {
      assertEquals(newArrayList(v3()), new ArrayList<>(values));

    expectedEvents += ConnectionReleased::class
    expectedEvents += CallEnd::class
    assertThat(eventRecorder.recordedEventTypes()).isEqualTo(expectedEvents)

    // Confirm that the connection pool was not corrupted by making another call.
    makeSimpleCall()
  }

  /**
   * If the server returns a full response, it doesn't really matter if the HTTP/2 stream is reset.
   * Attempts to write the request body fails fast.

                }
                throw new IOException("corrupted stream - high tag number < 31 found");
            }

            tagNo = b & 0x7f;

            // X.690-0207 8.1.2.4.2
            // "c) bits 7 to 1 of the first subsequent octet shall not all be zero."
            if (0 == tagNo) {
                throw new IOException("corrupted stream - invalid high tag number found");
            }