Hi all, I saw one issue is ram usage keep increase when we run query. After look in the code, looks like Lucene use MMapDirectory to map index file to ram.
According to http://lucene.apache.org/java/3_1_0/api/core/org/apache/lucene/store/MMapDirectory.html comments, it will use lot of memory. NOTE: memory mapping uses up a portion of the virtual memory address space in your process equal to the size of the file being mapped. Before using this class, be sure your have plenty of virtual address space, e.g. by using a 64 bit JRE, or a 32 bit JRE with indexes that are guaranteed to fit within the address space. So, my understanding is solr request physical RAM >= index file size, is it right? Yongtao ******************Legal Disclaimer*************************** "This communication may contain confidential and privileged material for the sole use of the intended recipient. Any unauthorized review, use or distribution by others is strictly prohibited. If you have received the message in error, please advise the sender by reply email and delete the message. Thank you." *********************************************************
