Re: [2.8.1]Checking optimistic transaction state on remote nodes

Mon, 23 Nov 2020 03:49:35 -0800 

Hi Ilya,
Then confirm again that according to the log message, optimistic transaction and READ_COMMITTED are used for single data operation of transactional cache? 


If transactions are explicitly turned on, the default concurrency model 
and isolation level are pessimistic and REPEATABLE_READ?


在 2020/11/20 下午7:50, Ilya Kasnacheev 写道:

Hello!


It will happen when the node has left but the transaction has to be 
committed.



Most operations on transactional cache will involve implicit 
transactions so there you go.


Regards,
--
Ilya Kasnacheev



чт, 19 нояб. 2020 г. в 16:46, 38797715 <38797...@qq.com 
<mailto:38797...@qq.com>>:


    Hi community,

    Although there is a transactional cache, no transaction operation is
    performed, but there is a lot of output below in the log. Why?

    [2020-11-16 14:01:44,947][INFO ][sys-stripe-8-#9][IgniteTxManager]
    Checking optimistic transaction state on remote nodes
    [tx=GridDhtTxLocal
    [nearNodeId=a7eded9b-4078-4ee5-a1dd-426b8debc203,
    nearFutId=e0576afd571-dbd82c53-1772-4c53-a4ea-38e601002379,
    nearMiniId=1, nearFinFutId=null, nearFinMiniId=0,
    nearXidVer=GridCacheVersion [topVer=216485010, order=1607062821327,
    nodeOrder=30], lb=null, super=GridDhtTxLocalAdapter
    [nearOnOriginatingNode=false, nearNodes=KeySetView [],
    dhtNodes=KeySetView [e4d4fc27-d2d9-47f9-8d21-dfac2c003b55,
    3060fc02-e94a-4b6d-851a-05d75ea751e0], explicitLock=false,
    super=IgniteTxLocalAdapter [completedBase=null,
    sndTransformedVals=false, depEnabled=false,
    txState=IgniteTxImplicitSingleStateImpl [init=true, recovery=false,
    useMvccCaching=false], super=IgniteTxAdapter [xidVer=GridCacheVersion
    [topVer=216485010, order=1607062856849, nodeOrder=1],
    writeVer=GridCacheVersion [topVer=216485023, order=1607062856850,
    nodeOrder=1], implicit=true, loc=true, threadId=24070,
    startTime=1605506134277, nodeId=2b0db4f4-86d1-42c2-babf-f6318bd932e5,
    startVer=GridCacheVersion [topVer=216485010, order=1607062856849,
    nodeOrder=1], endVer=null, isolation=READ_COMMITTED,
    concurrency=OPTIMISTIC, timeout=0, sysInvalidate=false, sys=false,
    plc=2, commitVer=null, finalizing=RECOVERY_FINISH, invalidParts=null,
    state=PREPARED, timedOut=false, topVer=AffinityTopologyVersion
    [topVer=117, minorTopVer=0], mvccSnapshot=null,
    skipCompletedVers=false,
    parentTx=null, duration=370668ms, onePhaseCommit=false], size=1]]],
    fut=GridCacheTxRecoveryFuture [trackable=true,
    futId=81c3b7af571-1093b7fe-20ae-4c3f-9adb-4ecac23c136e,
    tx=GridDhtTxLocal [nearNodeId=a7eded9b-4078-4ee5-a1dd-426b8debc203,
    nearFutId=e0576afd571-dbd82c53-1772-4c53-a4ea-38e601002379,
    nearMiniId=1, nearFinFutId=null, nearFinMiniId=0,
    nearXidVer=GridCacheVersion [topVer=216485010, order=1607062821327,
    nodeOrder=30], lb=null, super=GridDhtTxLocalAdapter
    [nearOnOriginatingNode=false, nearNodes=KeySetView [],
    dhtNodes=KeySetView [e4d4fc27-d2d9-47f9-8d21-dfac2c003b55,
    3060fc02-e94a-4b6d-851a-05d75ea751e0], explicitLock=false,
    super=IgniteTxLocalAdapter [completedBase=null,
    sndTransformedVals=false, depEnabled=false,
    txState=IgniteTxImplicitSingleStateImpl [init=true, recovery=false,
    useMvccCaching=false], super=IgniteTxAdapter [xidVer=GridCacheVersion
    [topVer=216485010, order=1607062856849, nodeOrder=1],
    writeVer=GridCacheVersion [topVer=216485023, order=1607062856850,
    nodeOrder=1], implicit=true, loc=true, threadId=24070,
    startTime=1605506134277, nodeId=2b0db4f4-86d1-42c2-babf-f6318bd932e5,
    startVer=GridCacheVersion [topVer=216485010, order=1607062856849,
    nodeOrder=1], endVer=null, isolation=READ_COMMITTED,
    concurrency=OPTIMISTIC, timeout=0, sysInvalidate=false, sys=false,
    plc=2, commitVer=null, finalizing=RECOVERY_FINISH, invalidParts=null,
    state=PREPARED, timedOut=false, topVer=AffinityTopologyVersion
    [topVer=117, minorTopVer=0], mvccSnapshot=null,
    skipCompletedVers=false,
    parentTx=null, duration=370668ms, onePhaseCommit=false], size=1]]],
    failedNodeIds=SingletonSet [a7eded9b-4078-4ee5-a1dd-426b8debc203],
    nearTxCheck=false, innerFuts=EmptyList [],
    super=GridCompoundIdentityFuture [super=GridCompoundFuture [rdc=Bool
    reducer: true, initFlag=0, lsnrCalls=0, done=false, cancelled=false,
    err=null, futs=EmptyList []]]]]
    [2020-11-16 14:01:44,947][INFO ][sys-stripe-8-#9][IgniteTxManager]
    Finishing prepared transaction [commit=true, tx=GridDhtTxLocal
    [nearNodeId=a7eded9b-4078-4ee5-a1dd-426b8debc203,
    nearFutId=e0576afd571-dbd82c53-1772-4c53-a4ea-38e601002379,
    nearMiniId=1, nearFinFutId=null, nearFinMiniId=0,
    nearXidVer=GridCacheVersion [topVer=216485010, order=1607062821327,
    nodeOrder=30], lb=null, super=GridDhtTxLocalAdapter
    [nearOnOriginatingNode=false, nearNodes=KeySetView [],
    dhtNodes=KeySetView [e4d4fc27-d2d9-47f9-8d21-dfac2c003b55,
    3060fc02-e94a-4b6d-851a-05d75ea751e0], explicitLock=false,
    super=IgniteTxLocalAdapter [completedBase=null,
    sndTransformedVals=false, depEnabled=false,
    txState=IgniteTxImplicitSingleStateImpl [init=true, recovery=false,
    useMvccCaching=false], super=IgniteTxAdapter [xidVer=GridCacheVersion
    [topVer=216485010, order=1607062856849, nodeOrder=1],
    writeVer=GridCacheVersion [topVer=216485023, order=1607062856850,
    nodeOrder=1], implicit=true, loc=true, threadId=24070,
    startTime=1605506134277, nodeId=2b0db4f4-86d1-42c2-babf-f6318bd932e5,
    startVer=GridCacheVersion [topVer=216485010, order=1607062856849,
    nodeOrder=1], endVer=null, isolation=READ_COMMITTED,
    concurrency=OPTIMISTIC, timeout=0, sysInvalidate=false, sys=false,
    plc=2, commitVer=null, finalizing=RECOVERY_FINISH, invalidParts=null,
    state=PREPARED, timedOut=false, topVer=AffinityTopologyVersion
    [topVer=117, minorTopVer=0], mvccSnapshot=null,
    skipCompletedVers=false,
    parentTx=null, duration=370668ms, onePhaseCommit=false], size=1]]]]























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