https://community.cloudera.com/t5/Archives-of-Support-Questions/Recommendations-of-Java-version-and-Garbage-Collector-for/m-p/94880#M8156 <P>Actually memory is #3 in this list. You will probably be concerned with available storage space for content repository before running out of memory. E.g. NiFi, even in big deployments feels comfortable with 96GB available memory, which is below an average server RAM today.</P> Tue, 06 Oct 2015 19:35:07 GMT andrewg 2015-10-06T19:35:07Z https://community.cloudera.com/t5/Archives-of-Support-Questions/Recommendations-of-Java-version-and-Garbage-Collector-for/m-p/94879#M8155 <P>We were recently informed that Nifi bottlenecks tend to be, in order of occurrence:</P><OL><LI>CPU</LI><LI>Memory</LI><LI>Disk</LI></OL><P>Is there a recommended Java version (Java 7 vs <span class="lia-unicode-emoji" title=":smiling_face_with_sunglasses:">😎</span> and garbage collector (Concurrent Mark Sweep vs G1) ?</P> Tue, 21 Apr 2026 12:35:42 GMT https://community.cloudera.com/t5/Archives-of-Support-Questions/Recommendations-of-Java-version-and-Garbage-Collector-for/m-p/94879#M8155 rgarcia 2026-04-21T12:35:42Z https://community.cloudera.com/t5/Archives-of-Support-Questions/Recommendations-of-Java-version-and-Garbage-Collector-for/m-p/94880#M8156 <P>Actually memory is #3 in this list. You will probably be concerned with available storage space for content repository before running out of memory. E.g. NiFi, even in big deployments feels comfortable with 96GB available memory, which is below an average server RAM today.</P> Tue, 06 Oct 2015 19:35:07 GMT https://community.cloudera.com/t5/Archives-of-Support-Questions/Recommendations-of-Java-version-and-Garbage-Collector-for/m-p/94880#M8156 andrewg 2015-10-06T19:35:07Z