"hadoop fs -count -q" or "hdfs dfs -count -q" currently shows name space/disk space quota and remaining quota information. With
HDFS-7584, we want to display per storage type quota and its remaining information as well.
The current output format as shown below may not easily accomodate 6 more columns = 3 (existing storage types) * 2 (quota/remaining quota). With new storage types added in future, this will make the output even more crowded. There are also compatibility issues as we don't want to break any existing scripts monitoring hadoop fs -count -q output.
$ hadoop fs -count -q -v /test
QUOTA REM_QUOTA SPACE_QUOTA REM_SPACE_QUOTA DIR_COUNT FILE_COUNT CONTENT_SIZE PATHNAME
none inf 524288000 524266569 1 15 21431 /test
Propose to add -t parameter to display ONLY the storage type quota information of the directory in the separately. This way, existing scripts will work as-is without using -t parameter.
1) When -t is not followed by a specific storage type, quota and usage information for all storage types will be displayed.
$ hadoop fs -count -q -t -h -v /test
SSD_QUOTA REM_SSD_QUOTA DISK_QUOTA REM_DISK_QUOTA ARCHIVAL_QUOTA REM_ARCHIVAL_QUOTA PATHNAME
512MB 256MB none inf none inf /test
2) If -t is followed by a storage type, only the quota and remaining quota of the storage type is displayed.
$ hadoop fs -count -q -t SSD -h -v /test
SSD_QUOTA REM_SSD_QUOTA PATHNAME
512 MB 256 MB /test