Minor Description
Currently if any index is disabled but has reindex flag enabled then it leads to following log entry for each commit (assuming disabled index was sync)
20.10.2017 13:15:40.031 *INFO* [FelixStartLevel] org.apache.jackrabbit.oak.plugins.index.IndexUpdate Reindexing completed 20.10.2017 13:15:40.046 *INFO* [FelixStartLevel] org.apache.jackrabbit.oak.plugins.index.IndexUpdate Indexing report 20.10.2017 13:15:40.046 *INFO* [FelixStartLevel] org.apache.jackrabbit.oak.plugins.index.IndexUpdate Reindexing completed 20.10.2017 13:15:40.056 *INFO* [FelixStartLevel] org.apache.jackrabbit.oak.plugins.index.IndexUpdate Indexing report 20.10.2017 13:15:40.056 *INFO* [FelixStartLevel] org.apache.jackrabbit.oak.plugins.index.IndexUpdate Reindexing completed 20.10.2017 13:15:40.068 *INFO* [FelixStartLevel] org.apache.jackrabbit.oak.plugins.index.IndexUpdate Indexing report 20.10.2017 13:15:40.068 *INFO* [FelixStartLevel] org.apache.jackrabbit.oak.plugins.index.IndexUpdate Reindexing completed 20.10.2017 13:15:40.076 *INFO* [FelixStartLevel] org.apache.jackrabbit.oak.plugins.index.IndexUpdate Indexing report 20.10.2017 13:15:40.076 *INFO* [FelixStartLevel] org.apache.jackrabbit.oak.plugins.index.IndexUpdate Reindexing completed 20.10.2017 13:15:40.092 *INFO* [FelixStartLevel] org.apache.jackrabbit.oak.plugins.index.IndexUpdate Indexing report 20.10.2017 13:15:40.092 *INFO* [FelixStartLevel] org.apache.jackrabbit.oak.plugins.index.IndexUpdate Reindexing completed 20.10.2017 13:15:40.103 *INFO* [FelixStartLevel] org.apache.jackrabbit.oak.plugins.index.IndexUpdate Indexing report 20.10.2017 13:15:40.103 *INFO* [FelixStartLevel] org.apache.jackrabbit.oak.plugins.index.IndexUpdate Reindexing completed 20.10.2017 13:15:40.123 *INFO* [FelixStartLevel] org.apache.jackrabbit.oak.plugins.index.IndexUpdate Indexing report 20.10.2017 13:15:40.123 *INFO* [FelixStartLevel] org.apache.jackrabbit.oak.plugins.index.IndexUpdate Reindexing completed 20.10.2017 13:15:40.131 *INFO* [FelixStartLevel] org.apache.jackrabbit.oak.plugins.index.IndexUpdate Indexing report 20.10.2017 13:15:40.131 *INFO* [FelixStartLevel] org.apache.jackrabbit.oak.plugins.index.IndexUpdate Reindexing completed 20.10.2017 13:15:40.137 *INFO* [FelixStartLevel] org.apache.jackrabbit.oak.plugins.index.IndexUpdate Indexing report 20.10.2017 13:15:40.137 *INFO* [FelixStartLevel] org.apache.jackrabbit.oak.plugins.index.IndexUpdate Reindexing completed 20.10.2017 13:15:40.143 *INFO* [FelixStartLevel] org.apache.jackrabbit.oak.plugins.index.IndexUpdate Indexing report 20.10.2017 13:15:40.143 *INFO* [FelixStartLevel] org.apache.jackrabbit.oak.plugins.index.IndexUpdate Reindexing completed 20.10.2017 13:15:40.149 *INFO* [FelixStartLevel] org.apache.jackrabbit.oak.plugins.index.IndexUpdate Indexing report 20.10.2017 13:15:40.149 *INFO* [FelixStartLevel] org.apache.jackrabbit.oak.plugins.index.IndexUpdate Reindexing complet
The empty lines are due to report not logging details if reindex index entryCount is 0. As a fix reindex logic should totally ignore disabled indexes