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  1. Core Server
  2. SERVER-46668

createIndexes command does not honor wtimeout when replication is disabled on v4.5.0-24-gb801dec

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major - P3
    • Resolution: Works as Designed
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: None
    • Labels:
      None
    • Operating System:
      ALL
    • Sprint:
      Execution Team 2020-04-06

      Description

      The python driver has a test to ensure that write commands properly raise an error when wtimeout is exceeded. The test runs on a replica set and disables replication on all secondaries using the stopReplProducer fail point.

      The test hangs when running a createIndexes command with "writeConcern":{"wtimeout":1,"w":3} on the following server version:

       [2020/03/05 10:36:29.083] db version v4.5.0-24-gb801dec
       [2020/03/05 10:36:29.083] git version: b801dec04f01dfa374a5d73e187ac793ae079dc5
       [2020/03/05 10:36:29.083] OpenSSL version: OpenSSL 1.0.2g  1 Mar 2016
       [2020/03/05 10:36:29.083] allocator: tcmalloc
       [2020/03/05 10:36:29.083] modules: enterprise
       [2020/03/05 10:36:29.083] build environment:
       [2020/03/05 10:36:29.085]     distmod: ubuntu1604
       [2020/03/05 10:36:29.085]     distarch: x86_64
       [2020/03/05 10:36:29.085]     target_arch: x86_64
      

      The createIndexes occurs on conn509:

       {"t":{"$date":"2020-03-05T18:40:26.258+0000"},"s":"I", "c":"INDEX",   "id":20438,"ctx":"conn509","msg":"Registering index build: {buildUUID}","attr":           {"buildUUID":{"uuid":{"$uuid":"92da4727-7623-46f4-ac2e-1856a5edba91"}}}}
       {"t":{"$date":"2020-03-05T18:40:26.258+0000"},"s":"D1","c":"STORAGE", "id":51780,"ctx":"IndexBuildsCoordinatorMongod-1","msg":"create uri: {uri} config:        {config}","attr":{"uri":"table:index-3206-8434647472929354996","config":"type=file,internal_page_max=16k,leaf_page_max=16k,checksum=on,prefix_compression=true, block_compressor=,,,,key_format=u,value_format=u,app_metadata=(formatVersion=8),log=(enabled=false)"}}
       {"t":{"$date":"2020-03-05T18:40:26.267+0000"},"s":"D1","c":"STORAGE", "id":22258,"ctx":"IndexBuildsCoordinatorMongod-1","msg":"created temporary record store:  {rs_getIdent}","attr":{"rs_getIdent":"internal-3207-8434647472929354996"}}
       {"t":{"$date":"2020-03-05T18:40:26.267+0000"},"s":"D1","c":"STORAGE", "id":20907,"ctx":"IndexBuildsCoordinatorMongod-1","msg":"{coll_ns}: clearing plan         cache - collection info cache reset","attr":{"coll_ns":"pymongo_test.test"}}
       {"t":{"$date":"2020-03-05T18:40:26.267+0000"},"s":"I", "c":"INDEX",   "id":20384,"ctx":"IndexBuildsCoordinatorMongod-1","msg":"index build: starting on {ns}    properties: {descriptor} using method: {method}","attr":{"ns":"pymongo_test.test","descriptor":{"v":2,"key":{"a":-1},"name":"a_-1"},"method":"Hybrid"}}
       {"t":{"$date":"2020-03-05T18:40:26.267+0000"},"s":"I", "c":"INDEX",   "id":20385,"ctx":"IndexBuildsCoordinatorMongod-1","msg":"build may temporarily use up to  {eachIndexBuildMaxMemoryUsageBytes_1024_1024} megabytes of RAM","attr":{"eachIndexBuildMaxMemoryUsageBytes_1024_1024":200}}
       {"t":{"$date":"2020-03-05T18:40:26.267+0000"},"s":"I", "c":"STORAGE", "id":20346,"ctx":"IndexBuildsCoordinatorMongod-1","msg":"Index build initialized:         {buildUUID}: {nss} ({collection_uuid} ): indexes: {indexes_size}","attr":{"buildUUID":{"uuid":{"$uuid":"92da4727-7623-46f4-ac2e-1856a5edba91"}},"nss":          "pymongo_test.test","collection_uuid":{"uuid":{"$uuid":"68d7d0de-cc78-441a-8bf9-85b28c69e5e4"}},"indexes_size":1}}
       {"t":{"$date":"2020-03-05T18:40:26.267+0000"},"s":"I", "c":"INDEX",   "id":20439,"ctx":"conn509","msg":"Waiting for index build to complete: {buildUUID}",      "attr":{"buildUUID":{"uuid":{"$uuid":"92da4727-7623-46f4-ac2e-1856a5edba91"}}}}
      {"t":{"$date":"2020-03-05T18:40:26.267+0000"},"s":"I", "c":"INDEX",   "id":20391,"ctx":"IndexBuildsCoordinatorMongod-1","msg":"index build: collection scan done. scanned {n} total records in {t_seconds} seconds","attr":{"n":1,"t_seconds":0}}
      {"t":{"$date":"2020-03-05T18:40:26.267+0000"},"s":"D1","c":"INDEX",   "id":20392,"ctx":"IndexBuildsCoordinatorMongod-1","msg":"index build: inserting from external sorter into index: {entry_descriptor_indexName}","attr":{"entry_descriptor_indexName":"a_-1"}}
      {"t":{"$date":"2020-03-05T18:40:26.268+0000"},"s":"I", "c":"INDEX",   "id":20685,"ctx":"IndexBuildsCoordinatorMongod-1","msg":"index build: inserted {bulk_getKeysInserted} keys from external sorter into index in {timer_seconds} seconds","attr":{"bulk_getKeysInserted":1,"timer_seconds":0}}
      {"t":{"$date":"2020-03-05T18:40:26.270+0000"},"s":"D1","c":"INDEX",   "id":20689,"ctx":"IndexBuildsCoordinatorMongod-1","msg":"index build: drain applied {numApplied_appliedAtStart} side writes (inserted: {totalInserted}, deleted: {totalDeleted}) for '{indexCatalogEntry_descriptor_indexName}' in {timer_millis} ms","attr":{"numApplied_appliedAtStart":0,"totalInserted":0,"totalDeleted":0,"indexCatalogEntry_descriptor_indexName":"a_-1","timer_millis":0}}
      {"t":{"$date":"2020-03-05T18:40:26.270+0000"},"s":"D1","c":"INDEX",   "id":20689,"ctx":"IndexBuildsCoordinatorMongod-1","msg":"index build: drain applied {numApplied_appliedAtStart} side writes (inserted: {totalInserted}, deleted: {totalDeleted}) for '{indexCatalogEntry_descriptor_indexName}' in {timer_millis} ms","attr":{"numApplied_appliedAtStart":0,"totalInserted":0,"totalDeleted":0,"indexCatalogEntry_descriptor_indexName":"a_-1","timer_millis":0}}
      {"t":{"$date":"2020-03-05T18:40:26.271+0000"},"s":"D1","c":"COMMAND", "id":3856208,"ctx":"IndexBuildsCoordinatorMongod-1","msg":"Received voteCommitIndexBuild request for index build: {builduuid}, from host: {host} ","attr":{"builduuid":{"uuid":{"$uuid":"92da4727-7623-46f4-ac2e-1856a5edba91"}},"host":"localhost:27019"}}
      {"t":{"$date":"2020-03-05T18:40:26.273+0000"},"s":"D1","c":"REPL",    "id":21337,"ctx":"IndexBuildsCoordinatorMongod-1","msg":"Required snapshot optime: {opTime} is not yet part of the current 'committed' snapshot: {currentCommittedSnapshotOpTime}","attr":{"opTime":{"ts":{"$timestamp":{"t":1583433626,"i":18}},"t":3},"currentCommittedSnapshotOpTime":{"ts":{"$timestamp":{"t":1583433625,"i":144}},"t":3}}}
      

      I've attached the full logs as well: server-logs-PYTHON-2153.zip

      To reproduce

      • start a v4.5.0-24-gb801dec 3 node replica set with one node running on port 27017.
      • clone pymongo: git clone git@github.com:mongodb/mongo-python-driver.git && cd mongo-python-driver
      • Run the test: python setup.py test -s test.test_read_write_concern_spec.TestReadWriteConcernSpec.test_raise_wtimeout

      Note: This test passes on MongoDB 4.3.4 and lower.

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              Assignee:
              benety.goh Benety Goh
              Reporter:
              shane.harvey Shane Harvey
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