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Type:
Improvement
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Resolution: Done
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Priority:
Minor - P4
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Affects Version/s: None
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Component/s: WiredTiger
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Fully Compatible
While it's possible to change wiredTigerCollectionBlockCompressor gracefully, starting with a different wiredTigerJournalCompressor requires the journal be deleted.
Failure to cleanup the journal directory before the switch yields the following error:
2016-04-12T10:47:23.582-0700 I - [initandlisten] Detected data files in . created by the 'wiredTiger' storage engine, so setting the active storage engine to 'wiredTiger'. 2016-04-12T10:47:23.582-0700 I STORAGE [initandlisten] wiredtiger_open config: create,cache_size=9G,session_max=20000,eviction=(threads_max=4),config_base=false,statistics=(fast),log=(enabled=true,archive=true,path=journal,compressor=snappy),file_manager=(close_idle_time=100000),checkpoint=(wait=60,log_size=2GB),statistics_log=(wait=0), 2016-04-12T10:47:23.844-0700 E STORAGE [initandlisten] WiredTiger (0) [1460483243:844133][24208:0x7fff785b7300], txn-recover: wt_snappy_decompress: stored size exceeds buffer size 2016-04-12T10:47:23.844-0700 E STORAGE [initandlisten] WiredTiger (-31802) [1460483243:844243][24208:0x7fff785b7300], txn-recover: Recovery failed: WT_ERROR: non-specific WiredTiger error 2016-04-12T10:47:23.867-0700 I - [initandlisten] Assertion: 28595:-31802: WT_ERROR: non-specific WiredTiger error 2016-04-12T10:47:23.867-0700 I STORAGE [initandlisten] exception in initAndListen: 28595 -31802: WT_ERROR: non-specific WiredTiger error, terminating 2016-04-12T10:47:23.867-0700 I CONTROL [initandlisten] shutting down with code:100