HDDS-14518. Support open keys and MPU in ContainerToKeyMapping tool

[sarvekshayr]

What changes were proposed in this pull request?

Added a flag --in-progress to include open files/keys and multipart uploads in ContainerToKeyMapping tool.

What is the link to the Apache JIRA

HDDS-14518

How was this patch tested?

Only shows files and keys from fileTable and keyTable respectively.

ozone debug om container-key-mapping --db /data/metadata/om.db --containers 1,2,3,4
{
  "containers" : {
    "1" : {
      "keys" : [ "/vol1/fso-bucket/dir1/file1" ],
      "totalKeys" : 1
    },
    "2" : {
      "keys" : [ "/vol1/obs-bucket/key1" ],
      "totalKeys" : 1
    },
    "3" : {
      "keys" : [ ],
      "unreferencedKeys" : 1,
      "totalKeys" : 1
    },
    "4" : {
      "keys" : [ ],
      "totalKeys" : 0
    }
  }
}

Shows open files and keys from openFileTable and openKeyTable respectively. Also includes multipart uploads info from multipartInfoTable

ozone debug om container-key-mapping --db /data/metadata/om.db --containers 1,2,3,4 --in-progress
{
  "containers" : {
    "1" : {
      "keys" : [ "/vol1/fso-bucket/dir1/file1" ],
      "openKeys" : [ "/100/200/300/openFile/1" ],
      "totalKeys" : 2
    },
    "2" : {
      "keys" : [ "/vol1/obs-bucket/key1" ],
      "openKeys" : [ "/vol1/obs-bucket/openKey" ],
      "totalKeys" : 2
    },
    "3" : {
      "keys" : [ ],
      "openKeys" : [ ],
      "unreferencedKeys" : 1,
      "totalKeys" : 1
    },
    "4" : {
      "keys" : [ ],
      "openKeys" : [ "/vol1/obs-bucket/mpuKey/test-upload-id" ],
      "totalKeys" : 1
    }
  }
}

Show only file names (does not apply to in-progress files/keys)

ozone debug om container-key-mapping --db /data/metadata/om.db --containers 1,2,3,4 --in-progress --onlyFileNames
{
  "containers" : {
    "1" : {
      "keys" : [ "file1" ],
      "openKeys" : [ "/100/200/300/openFile/1" ],
      "totalKeys" : 2
    },
    "2" : {
      "keys" : [ "key1" ],
      "openKeys" : [ "/vol1/obs-bucket/openKey" ],
      "totalKeys" : 2
    },
    "3" : {
      "keys" : [ "unreferencedFile" ],
      "openKeys" : [ ],
      "totalKeys" : 1
    },
    "4" : {
      "keys" : [ ],
      "openKeys" : [ "/vol1/obs-bucket/mpuKey/test-upload-id" ],
      "totalKeys" : 1
    }
  }
}

[sreejasahithi]

Thanks @sarvekshayr for working on this.
Could you please reduce the duplication between processOpenFiles() and processOpenKeys().

[sumitagrawl]

@sarvekshayr Thanks for working over this, given few comments

[sumitagrawl]

Plz check comments

[sumitagrawl]

LGTM