Juniper Networks has released hot-patch files for the Network Management Platform.
Links to the hot-patch documentation:
Junos-Space-17_2R1-Hot-Patch-v1-Release-Notes
Junos-Space-17_2R1-Hot-Patch-v3-Release-Notes
Junos-Space-17_2R1-Hot-Patch-v4-Release-Notes
Junos-Space-17_2R1-Hot-Patch-v5-Release-Notes
Junos-Space-17_2R1-Hot-Patch-v6-Release-Notes
Junos-Space-17_2R1-Hot-Patch-v7-Release-Notes
Junos-Space-17_2R1-Hot-Patch-v8-Release-Notes
2019-05-21: v8 release notes updated with reboot instruction