[GitHub] wohali opened a new issue #643: EUnit couchdb_views_tests failure: suspend_process after termination

[gi...@git.apache.org]

wohali opened a new issue #643: EUnit couchdb_views_tests failure: suspend_process after termination
URL: https://github.com/apache/couchdb/issues/643
 
 
   https://travis-ci.org/apache/couchdb/jobs/250135101#L3825
   
   ```
     View group shutdown
       couchdb_views_tests:315: couchdb_1283...*failed*
   in function erlang:suspend_process/1
     called as suspend_process(<0.27290.0>)
   in call from couchdb_views_tests:'-couchdb_1283/0-fun-21-'/0 (test/couchdb_views_tests.erl, line 381)
   **error:badarg
     output:<<"">>
   ```
   
   Analysis of the logfile shows the compaction completes in just 200ms:
   
   ```
   [info] 2017-07-04T21:35:33.260737Z nonode@nohost <0.27290.0> -------- Compaction started for db: eunit-test-db-1499204132844268 idx: _design/foo
   [info] 2017-07-04T21:35:33.262754Z nonode@nohost <0.27290.0> -------- Compaction finished for db: eunit-test-db-1499204132844268 idx: _design/foo
   ```
   
   so my hunch is that it is already gone by the time we call erlang:suspend_process. This test is racey.
   
   ## Possible Solution
   @rnewson says on IRC we could spawn it with `{hibernate_after,0}` but that only works for gen_server:start_link, and we'd have to get deep inside `couch_index_server` to do that, I think.
   
   We could bump up the populate_db to 1000 or 10000 documents as a workaround.
 
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