Indexer: ForestDB fails to compact before disk fills up

While creating an index, the indexer failed to successfully compact before running out of disk space.

Initial build of Index based on a bucket containing 40m items - bucket already populated so no ongoing KV mutations.

I already created the index in a different index node, so I know that the disk requirements are 17GB with 1% fragmentation.

Disk space is 100GB.

Compaction is set at 30%.

Indexer got to ~69% of the build before running out of disk space, and now appears to not be responding in the UI.

Full Cluster Logs:

https://s3.amazonaws.com/cb-support/malarky/10153/collectinfo-2015-11-16T172124-ns_1%40malarky-cb-1.c.cb-googbench-101.internal.zip
https://s3.amazonaws.com/cb-support/malarky/10153/collectinfo-2015-11-16T172124-ns_1%40malarky-cb-2.c.cb-googbench-101.internal.zip
https://s3.amazonaws.com/cb-support/malarky/10153/collectinfo-2015-11-16T172124-ns_1%40malarky-cb-3.c.cb-googbench-101.internal.zip
https://s3.amazonaws.com/cb-support/malarky/10153/collectinfo-2015-11-16T172124-ns_1%40malarky-cb-4.c.cb-googbench-101.internal.zip
https://s3.amazonaws.com/cb-support/malarky/10153/collectinfo-2015-11-16T172124-ns_1%40malarky-cb-5.c.cb-googbench-101.internal.zip