I am using this jira filter to find jiras with patch available but unassigned. https://issues.apache.org/jira/issues/?filter=12346814&jql=project%20in%20(HADOOP%2C%20HDFS%2CYARN%2CMAPREDUCE%2CHDDS%2CSUBMARINE)%20AND%20status%20%3D%20%22Patch%20Available%22%20AND%20assignee%20%3D%20EMPTY%20ORDER%20BY%20created%20DESC%2C%20updated%20DESC
In most cases, these jiras are unassigned because the contributor who posted the patch are the first-timers and do not have the contributor role in the jira. It's very common for those folks to get overlooked. Hadoop PMCs, if you have the JIRA administrator permission, please help grant contributor access to these contributors. You help keep the project more friendly to new-comers. You can do so by going to JIRA --> (upper right, click on the gear next to your profile avatar) --> Projects --> click on the project (say Hadoop HDFS) --> Roles --> View Project Roles --> Add users to a role --> add to Contributor list, or if the Contributor list is full, add to Contributor1 list. Or you can go to https://issues.apache.org/jira/plugins/servlet/project-config/HDFS/roles to add the contributor access for HDFS. Similarly goes for Hadoop Common and other sub-projects.