Doc-Indexer stopps at Doc 267

We installed both - EDocMan and pdf-Indexer. On a system with

• Apache Server 2.4.23
• MySQL 5.7.14
• php 7.1.0
• Joomla 3.6.3

On Indexer configuration I set a path where we placed over the years 3000 documents within 500 subfolders.
All these files are within only one category of EDocMan. I imported them after setting the field-type of "indexed_content" in database "jos_edocman_documents" from text to mediumtext what gives that field more place for its index.
Finally I startet doc-indexers new-Index-function with "Documents belong to EDocMan - and it seemed to work. For an hour or more the servers cpu was occupied with regular peaks of activities.
Unfortunately there are only 267 files indexed in document-indexers documents. And a lot of the files will not be found by the search-module. It does not matter if I do new-index or re-index and if the files belong to "none" or to "com_edocman". There are only 267 documents indexed. And also in EDocMans table "jos_edocman_documents" there are only 268 entries with "indexed_content <> NULL".
What can there be limiting the indexer? In php.ini the "max_execution_time = 300".

Hi,
In fact, the PDF indexer will index all documents from Edocman (each document per time), and it will only stop when all documents are indexed. In your case, i thought the documents haven't been indexed successfully. You should leave your computer to make the PDF indexer to index all documents from Edocman. It might longer than your expected.
Thanks
Dam