}

  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))
      }
    }
  }

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

- 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));

        // 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)

    expectedEvents += "ConnectionReleased"
    expectedEvents += "CallEnd"
    assertThat(listener.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");
            }

		t.Fatalf("FileInfo not equal after healing: %v != %v", fi, nfi)
	}

	// Test 4: checks if HealObject returns an error when xl.meta is not found
	// in more than read quorum number of disks, to create a corrupted situation.
	for i := 0; i <= nfi.Erasure.DataBlocks; i++ {
		erasureDisks[i].Delete(t.Context(), bucket, pathJoin(object, xlStorageFormatFile), DeleteOptions{
			Recursive: false,
			Immediate: false,
		})
	}

        return
      } catch (journalIsCorrupt: IOException) {
        Platform.get().log(
          "DiskLruCache $directory is corrupt: ${journalIsCorrupt.message}, removing",
          WARN,
          journalIsCorrupt,
        )
      }

      // The cache is corrupted, attempt to delete the contents of the directory. This can throw and