pipelinedb: Memory leak

May 25 07:22:33 vapipeline01 kernel: [733833.174735] [ 8820]  1001  8820  3149706  1516475    2992        0             0 pipeline-server
May 25 07:22:33 vapipeline01 kernel: [733833.174868] Out of memory: Kill process 8820 (pipeline-server) score 369 or sacrifice child
May 25 07:22:33 vapipeline01 kernel: [733833.179622] Killed process 8820 (pipeline-server) total-vm:12598824kB, anon-rss:6065816kB, file-rss:84kB
May 25 07:22:33 vapipeline01 pipeline[8814]: [83-1] LOG:  autovacuum launcher process (PID 8820) was terminated by signal 9: Killed
May 25 12:45:51 vapipeline01 pipeline[20481]: [8820-1] LOG:  out of file descriptors: Too many open files; release and retry
May 25 12:45:51 vapipeline01 pipeline[20481]: [8820-2] STATEMENT:  planedemo_altitude
May 25 13:36:14 vapipeline01 pipeline[20482]: [8820-1] LOG:  out of file descriptors: Too many open files; release and retry
May 25 13:36:14 vapipeline01 pipeline[20482]: [8820-2] STATEMENT:  planedemo_altitude