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code improvements from tidier. Patch by Kostis Sagonas. COUCHDB-570
Fix a couple typos in the source. paramter -> parameter InitalBuild -> InitialBuild Thanks David Coallier and Glenn Rempe for pointing them out.
Fix partial view updating regression.
Refactoring of endkey code in views and btrees. End key functionaility is now handled inside the btree code, simplfying calling code and making it trivial to add new collation options
Added 3 stage pipeline for indexing views: loader, mapper, writer. This results in better performance and resource utilization.
various bugfixes and improvements for view compaction View compaction was broken after the switch to signature-based index files, but we don't have tests for it yet so we didn't notice. I also committed a few changes that should make compaction faster and more robust: * commit the header immediately after compaction finishes. We used to wait 1 seconds, but if the server restarted in that second the index would be reset. * unlink from old index file at the end. Prevents process crashes that could couch_view (and with the delayed commit would sometimes cause index resets). * don't wait for running view updates to finish before replacing old view index file. If an update is running, restart it and point it to the new view group. This alleviates the situation where the view compaction goes into a busy wait, printing "still behind main file" 1000s of times to the log, and generally makes compaction finish more quickly. * better logging
checkpoint long-running view updates Improves stale=ok view queries, which will now see gradually updating indexes. Also reduces the consequences of an updater crash because we can restart from the latest checkpoint.
wheeeeeeee
trimmed trailing whitespace
Name view index files by their function hashes for no downtime deploys. Closes COUCHDB-218 Adds ability to switch view indexes on the fly by building the index from a "staging" design doc, and then COPYing the staging doc to the production doc's id. Since indexes are referenced by view definition, the new version of the production design doc will point immediately to the index files already built in staging. Please use and give feedback.
last three dialyzer recommended cleanups
remove leftover trace logging
added an design doc option so that doc._local_seq can be available in the map view. Closes COUCHDB-346
First cut at _changes api. Update the by_id and by_seq indexes to contain update seq numbers and pointers to bodies on disk, for use in the _changes api. This is a new file version, but the code can continue to serve the old 0.9 version without problems, though certain features in the _changes api will not be able to work. Upgrade to new file version (from 1 to 2) by compacting the file. Also fixed bugs with how the stats api tracks open databases.
Added options member to design docs. Currently the only option is include_designs (views can now run over design docs as well if they need to), the default is false, which is the current behavior. Thanks davisp for the original patch. Closes COUCHDB-156
Added task status checking, to help debug the progress of long running tasks, like view indexing and compaction.
Fixed views to not commit index headers if they are ahead of what has been fully committed to the database. Also, the index headers are now committed async, improving response times updating views.
move couchdb to tlp
modifications to view server to keep the file descriptor open for the life of the view group.
removed a particularly verbose LOG_DEBUG statement
view group state gen_server. thanks damien and davisp.
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