Adam Simpkins 0285670135 fetch missing tree data from a remote hg server when needed ... Summary: This is a first pass at updating eden to fetch tree manifest data from a remote mercurial server on demand. The code now catches MissingKeyErrors thrown by the datastore code, and then fetches the requested tree data from the remote server. This makes it safe to use tree manifest for import, as we can now fetch missing tree data as needed, instead of always returning I/O errors whenever we reach a tree not available locally. Unfortunately, the performance of downloading tree data is currently not very good: it takes 90+ seconds plus to download any tree data. The current mercurial server code appears to always provide full recursive tree data (unless you ask for the delta between two manifests, which we do not have). Even when asking for very small subdirectories, the server appears to send the full tree manifest data for the entire repository, sometimes taking longer than if we had asked for the full repository data to start with. Note that tree manifest import is still disabled by default with this diff, and must be explicitly enabled by running edenfs with `--use_hg_tree_manifest`. Reviewed By: wez Differential Revision: D5544817 fbshipit-source-id: 940e0c914f055edc1beee438b0ac50c2f8b08b03		2017-08-04 18:46:54 -07:00
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config	Auto-dep the auto-dep'd TARGETS	2017-07-02 15:50:51 -07:00
fuse	move dropPrivileges() to UserInfo, and restore supplimentary groups	2017-07-27 19:39:00 -07:00
inodes	fix EdenServer::unmount() to fully wait for mount point cleanup	2017-08-02 17:07:19 -07:00
journal	format eden/fs TARGETS files with autodeps	2017-06-27 21:20:15 -07:00
model	add == and != comparisons for Tree objects	2017-07-05 11:21:30 -07:00
rocksdb	Merge StringBase.cpp into String.cpp	2017-06-29 20:20:11 -07:00
service	use folly::Synchronized to manage the mount point map	2017-08-02 17:42:49 -07:00
store	fetch missing tree data from a remote hg server when needed	2017-08-04 18:46:54 -07:00
testharness	Adding lastCheckoutTime to EdenMount and initializing timestamps of FileInode with lastCheckoutTime	2017-07-27 11:52:31 -07:00
utils	update hg import tester to help benchmarking	2017-08-03 18:00:22 -07:00