Trying to find Column value based filtering in HBase REST API - rest

Question

HI I am trying to build REST APIs for exposing data that resides in HBase. For simplicity I am using built in HBase REST API.I am following documentation from https://www.cloudera.com/documentation/enterprise/latest/topics/admin_hbase_rest_api.html . I have created one API for search utility which uses Rowkey. But I am stuck at that the my remaining API's require search based on column values. The documentation suggests steps but I am not able to use it.And there are no other sources available. I found there are filtering options in HBase Java Client like singlecolumnvalue filter with utilities like substringComaparator. Like these is there any way i can apply filters in HBase REST APIs?

Answer 1

The link you pasted show how to use scanner:
curl -vi -X PUT \
-H "Accept: text/xml" \
-H "Content-Type:text/xml" \
-d #filter.txt \
"http://example.com:20550/users/scanner/"
#stelcheck collected usage of some filters here. So if you want to use SingleColumnValueFilter with hbase rest api, your filter.txt will be like:
<Scanner batch="100">
<filter>
{
"type": "SingleColumnValueFilter",
"op": "EQUAL",
"family": "Y2Y=",
"qualifier": "cQ==",
"latestVersion": true,
"comparator": {
"type": "BinaryComparator",
"value": "dmFsdWU5"
}
}
</filter>
</Scanner>
This example is to find the cell with value value9 in column cf:q.
Update:
Add example to parse filter content in command line.
If don't want to use file content as data, just parse the content in command line.
For the example above, it will be :
curl -s -i -X PUT -H "Accept: text/xml" -H "Content-Type: text/xml" -d '<Scanner batch="100"><filter>{"type": "SingleColumnValueFilter", "op": "EQUAL", "family": "Y2Y=", "qualifier": "cQ==", "latestVersion": true, "comparator": { "type": "BinaryComparator", "value": "dmFsdWU5" } }</filter></Scanner>' "http://example.com:20550/users/scanner/"