[FLUME-2753] Error when specifying empty replace string in Search and Replace Interceptor

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.7.0
• Assignee: Johny Rufus
• Reporter: Johny Rufus
• Created: 03/Aug/15 21:38
• Updated: 18/Jun/16 17:35
• Resolved: 06/Aug/15 20:58

Description

The user guide specifies that the following configuration

a1.sources.avroSrc.interceptors.search-replace.replaceString =

will replace the search pattern with an empty string, but the following error is observed and there is no way to specify an empty replace string

java.lang.NullPointerException: Must supply a replacement string replaceString (empty is ok)
at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:204)
at org.apache.flume.interceptor.SearchAndReplaceInterceptor$Builder.configure(SearchAndReplaceInterceptor.java:108)
at org.apache.flume.channel.ChannelProcessor.configureInterceptors(ChannelProcessor.java:110)

We need to modify the SearchAndReplaceInterceptor to accept null values for replacement string and use empty string in that case