mongo downgrade from 4.2 to 4.0 fails

[mallik2022]

024-04-18T14:59:50.838+0000 I CONTROL [initandlisten] distarch: x86_64
2024-04-18T14:59:50.838+0000 I CONTROL [initandlisten] target_arch: x86_64
2024-04-18T14:59:50.838+0000 I CONTROL [initandlisten] options: { config: "/data/configdb/mongod.conf", net: { bindIp: "0.0.0.0", port: 27017 }, replication: { replSet: "rs0" }, security: { authorization: "enabled", keyFile: "/data/configdb/key.txt" }, storage: { dbPath: "/data/db", wiredTiger: { engineConfig: { cacheSizeGB: 1.0 } } } }
2024-04-18T14:59:50.839+0000 I STORAGE [initandlisten] Detected data files in /data/db created by the 'wiredTiger' storage engine, so setting the active storage engine to 'wiredTiger'.
2024-04-18T14:59:50.839+0000 I STORAGE [initandlisten] wiredtiger_open config: create,cache_size=1024M,session_max=20000,eviction=(threads_min=4,threads_max=4),config_base=false,statistics=(fast),log=(enabled=true,archive=true,path=journal,compressor=snappy),file_manager=(close_idle_time=100000),statistics_log=(wait=0),verbose=(recovery_progress),
exception: connect failed
2024-04-18T14:59:51.533+0000 E STORAGE [initandlisten] WiredTiger error (-31802) [1713452391:533646][30:0x7f12046b0a80], connection: __log_open_verify, 1043: unsupported WiredTiger file version: this build only supports versions up to 3, and the file is version 4: WT_ERROR: non-specific WiredTiger error Raw: [1713452391:533646][30:0x7f12046b0a80], connection: __log_open_verify, 1043: unsupported WiredTiger file version: this build only supports versions up to 3, and the file is version 4: WT_ERROR: non-specific WiredTiger error
2024-04-18T14:59:51.540+0000 E STORAGE [initandlisten] WiredTiger error (-31802) [1713452391:540515][30:0x7f12046b0a80], connection: __log_open_verify, 1043: unsupported WiredTiger file version: this build only supports versions up to 3, and the file is version 4: WT_ERROR: non-specific WiredTiger error Raw: [1713452391:540515][30:0x7f12046b0a80], connection: __log_open_verify, 1043: unsupported WiredTiger file version: this build only supports versions up to 3, and the file is version 4: WT_ERROR: non-specific WiredTiger error
2024-04-18T14:59:51.547+0000 E STORAGE [initandlisten] WiredTiger error (-31802) [1713452391:547217][30:0x7f12046b0a80], connection: __log_open_verify, 1043: unsupported WiredTiger file version: this build only supports versions up to 3, and the file is version 4: WT_ERROR: non-specific WiredTiger error Raw: [1713452391:547217][30:0x7f12046b0a80], connection: __log_open_verify, 1043: unsupported WiredTiger file version: this build only supports versions up to 3, and the file is version 4: WT_ERROR: non-specific WiredTiger error
2024-04-18T14:59:51.548+0000 W STORAGE [initandlisten] Failed to start up WiredTiger under any compatibility version.
2024-04-18T14:59:51.548+0000 F STORAGE [initandlisten] Reason: -31802: WT_ERROR: non-specific WiredTiger error
2024-04-18T14:59:51.548+0000 F - [initandlisten] Fatal Assertion 28595 at src/mongo/db/storage/wiredtiger/wiredtiger_kv_engine.cpp 704
2024-04-18T14:59:51.548+0000 F - [initandlisten]

[sophokles73]

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