dsetool checkcfs

Scans a single Cassandra File System (CFS) file, or the whole CFS, for corrupted files.

Scans a single Cassandra File System (CFS) file, or the whole CFS, for corrupted files.
Restriction: Command is supported only on nodes with analytics workloads.

Synopsis

dsetool checkcfs filepath|cfs:///
Table 1. Legend
Syntax conventions Description
UPPERCASE Literal keyword.
Lowercase Not literal.
Italics Variable value. Replace with a valid option or user-defined value.
[ ] Optional. Square brackets ( [ ] ) surround optional command arguments. Do not type the square brackets.
( ) Group. Parentheses ( ( ) ) identify a group to choose from. Do not type the parentheses.
| Or. A vertical bar ( | ) separates alternative elements. Type any one of the elements. Do not type the vertical bar.
... Repeatable. An ellipsis ( ... ) indicates that you can repeat the syntax element as often as required.
'Literal string' Single quotation ( ' ) marks must surround literal strings in CQL statements. Use single quotation marks to preserve upper case.
{ key:value } Map collection. Braces ( { } ) enclose map collections or key value pairs. A colon separates the key and the value.
<datatype1,datatype2> Set, list, map, or tuple. Angle brackets ( < > ) enclose data types in a set, list, map, or tuple. Separate the data types with a comma.
cql_statement; End CQL statement. A semicolon ( ; ) terminates all CQL statements.
[ -- ] Separate the command line options from the command arguments with two hyphens ( -- ). This syntax is useful when arguments might be mistaken for command line options.
' <schema> ... </schema> ' Search CQL only: Single quotation marks ( ' ) surround an entire XML schema declaration.
@xml_entity='xml_entity_type' Search CQL only: Identify the entity and literal value to overwrite the XML element in the schema and solrconfig files.
cfs:///
Checks the default Cassandra File System (CFS).
filepath
Get details about a particular file that has been corrupted.

Examples

Scan the Cassandra File System (CFS) for corrupted files:

dsetool checkcfs cfs:///
Get details about a particular file that has been corrupted:
dsetool checkcfs /tmp/myhadoop/mapred/system/jobtracker.info