Klaus Post c8ca055935 Fix concurrent map read/write (#13052) ...

Clones were not independent.

Fixes race:

```
WARNING: DATA RACE
Read at 0x00c002040cc0 by goroutine 50:
  runtime.mapiterinit()
      c:/go/src/runtime/map.go:802 +0x0
  github.com/minio/minio/cmd.(*dataUsageCache).flatten()
      d:/minio/minio/cmd/data-usage-cache.go:551 +0xad
  github.com/minio/minio/cmd.(*dataUsageCache).dui()
      d:/minio/minio/cmd/data-usage-cache.go:352 +0x144
  github.com/minio/minio/cmd.(*erasureServerPools).NSScanner.func3.1()
      d:/minio/minio/cmd/erasure-server-pool.go:542 +0x2a4
  github.com/minio/minio/cmd.(*erasureServerPools).NSScanner.func3()
      d:/minio/minio/cmd/erasure-server-pool.go:561 +0x24b

Previous write at 0x00c002040cc0 by goroutine 1391:
  runtime.mapassign_faststr()
      c:/go/src/runtime/map_faststr.go:202 +0x0
  github.com/minio/minio/cmd.(*dataUsageEntry).addChild()
      d:/minio/minio/cmd/data-usage-cache.go:231 +0x313
  github.com/minio/minio/cmd.(*dataUsageCache).replace()
      d:/minio/minio/cmd/data-usage-cache.go:383 +0x293
  github.com/minio/minio/cmd.erasureObjects.nsScanner.func1()
      d:/minio/minio/cmd/erasure.go:428 +0x3a6
```

2021-08-24 07:11:38 -07:00

28 KiB

Raw Blame History

View Raw