I am stuck with some issue related to Write.lock file.
During the Typeahead index creation, the program had to be stopped in between.

After that, whenever I am trying to zip/extract the index directory, I am getting the following exception:-
org.apache.lucene.store.LockReleaseFailedException : failed to delete C:\GM CS Workspace\GM_CS_INT_New\lucene-publisher\output\d837acdb-95a0-4d25-80d7-48874363e3f8\typeahead\1\typeahead\1\indexmain\wri te.lock

or

java.util.zip.ZipException: error in opening zip file
There is an IoException Occured :java.util.zip.ZipException: error in opening zip file

In the log file, the following exception is logged:-
Error while attempting to zip files, exception is java.io.IOException: The process cannot access the file because another process has locked a portion of the file

So far, I have tried :-
System restart
Manually removing the Write.lock file in the output/guid folder
Manually deleting the Write.lock file in the Users/Tmp folder

Please let me know what I can do about it.
Though it is not affecting the creation of indexes.