https://cwiki.apache.org/confluence/display/Hive/LanguageManual+UDF regexp_extract(string subject, string pattern, int index) Returns the string extracted using the pattern. For example, regexp_extract('foothebar', 'foo(.*?)(bar)', 2) returns 'bar.' Note that some care is necessary in using predefined character classes: using '\s' as the second argument will match the letter s; '\\s' is necessary to match whitespace, etc. The 'index' parameter is the Java regex Matcher group() method index. See docs/api/java/util/regex/Matcher.html for more information on the 'index' or Java regex group() method. In your case it will return everything from the start until the first comma (comma included). For example if your text is "abc,def,geh", it will return "abc,". Hope this helps. ... View more

Hi @Ram, You may want to have a look here: https://docs.hortonworks.com/HDPDocuments/Ambari-2.2.2.0/bk_Ambari_Users_Guide/content/_configuring_notifications.html Ambari gives you the possibility to configure custom notifications and have email alerting. Hope this helps. ... View more

Hi @Mehul Ramani, You may be interested by this thread: https://mail-archives.apache.org/mod_mbox/nifi-users/201604.mbox/%3CBE659B6A-0174-4D04-97D5-640AD1849E14@apache.org%3E On this mailing list, @Jeremy Dyer has posted an example to access Salesforce with OAuth 2.0. I enclosed it to this answer: salesforce-oauth2-login-example.xml I've also posted a blog regarding OAuth here: https://pierrevillard.com/2016/04/12/oauth-1-0a-with-apache-nifi-twitter-api-example/ ... View more

Hi @Manikandan Durairaj, You must set the 'Twitter Endpoint' property to 'Filter Endpoint' to be able to use the filtering capabilities. Hope this helps. ... View more

Hi @Ahmad Debbas, I never did it but what you could try is to assign a drive letter (X for example) to your shared folder and then use a path like X:/my/folder in the GetFile processor. https://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/windows_fcab_connect_drive.mspx?mfr=true Hope this helps. ... View more

Hi @Ankit Jain, Yes, it is possible to use NiFi to expose REST services using a processor like HandleHttpRequest. You may have a look to this blog: I used NiFi to expose a URL shortener service [1]. This is a basic example but I believe this answer your question. Hope this helps. [1] https://pierrevillard.com/2016/04/10/url-shortener-service-with-apache-nifi/ ... View more

Hi @Ahmad Debbas, I am not sure the fully qualified path is needed, you could try with /CF. Otherwise, a full path would be something like <fs.defaultFS>/CF where <fs.defaultFS> is a property you have in your core-site configuration file (which is needed by the processor). Also take care of the rights: the user running NiFi must have write access into your folder. Hope this helps. ... View more