java - Apache Ignite 持久性问题/警告

Question

我们正在 Apache Ignite 上运行写入密集型负载测试。我们也在做阅读。经过几个小时的测试后，我们经常从 sys-stripe 线程收到以下警告消息。

数据库配置-> RAM - 8GB，CPU 内核 - 64， 持久性 - 开启， 堆 - 2GB，堆外持久内存 - 2GB，XX:MaxDirectMemorySize - 1GB， WAL 归档 - 关闭， 检查点缓冲区大小 - 1GB， walSegmentSize - 256mb

我们在应用服务器(客户端)中初始化了 70 个线程(查询)，客户端有 64 核 CPU，最大堆配置为 2GB。

[WARNING][grid-timeout-worker-#135][G] >>> Possible starvation in striped pool.
    Thread name: sys-stripe-1-#2
    Queue: [Message closure [msg=GridIoMessage [plc=2, topic=TOPIC_CACHE, topicOrd=8, ordered=false, timeout=0, skipOnTimeout=false, msg=GridNearGetRequest [futId=49990d3e171-cd1ebc9c-a326-4009-851b-1a3f2a703edd, miniId=59990d3e171-cd1ebc9c-a326-4009-851b-1a3f2a703edd, ver=null, keyMap=null, flags=1, topVer=AffinityTopologyVersion [topVer=4, minorTopVer=0], subjId=2ab5710f-6568-4940-b3cc-ce756a634f4e, taskNameHash=0, createTtl=-1, accessTtl=-1, txLbl=null, mvccSnapshot=null]]], Message closure [msg=GridIoMessage [plc=2, topic=TOPIC_CACHE, topicOrd=8, ordered=false, timeout=0, skipOnTimeout=false, msg=GridNearAtomicSingleUpdateFilterRequest [filter=[o.a.i.i.processors.cache.CacheEntrySerializablePredicate@653d7f85], parent=GridNearAtomicSingleUpdateRequest [key=KeyCacheObjectImpl [part=129, val=null, hasValBytes=true], parent=GridNearAtomicAbstractSingleUpdateRequest [nodeId=null, futId=29605669, topVer=AffinityTopologyVersion [topVer=4, minorTopVer=0], parent=GridNearAtomicAbstractUpdateRequest [res=null, flags=needRes|keepBinary]]]]]], Message closure [msg=GridIoMessage [plc=2, topic=TOPIC_CACHE, topicOrd=8, ordered=false, timeout=0, skipOnTimeout=false, msg=GridNearTxFinishRequest [miniId=1, mvccSnapshot=null, super=GridDistributedTxFinishRequest [topVer=AffinityTopologyVersion [topVer=4, minorTopVer=0], futId=97a90d3e171-cd1ebc9c-a326-4009-851b-1a3f2a703edd, threadId=1251, commitVer=null, invalidate=false, commit=false, baseVer=null, txSize=0, sys=true, plc=2, subjId=2ab5710f-6568-4940-b3cc-ce756a634f4e, taskNameHash=0, flags=32, syncMode=FULL_SYNC, txState=null, super=GridDistributedBaseMessage [ver=GridCacheVersion [topVer=200084669, order=1588652521556, nodeOrder=3], committedVers=null, rolledbackVers=null, cnt=0, super=GridCacheIdMessage [cacheId=0, super=GridCacheMessage [msgId=59316508, depInfo=null, lastAffChangedTopVer=AffinityTopologyVersion [topVer=4, minorTopVer=0], err=null, skipPrepare=false]]]]]]], Message closure [msg=GridIoMessage [plc=2, topic=TOPIC_CACHE, topicOrd=8, ordered=false, timeout=0, skipOnTimeout=false, msg=GridNearTxPrepareRequest [futId=cca90d3e171-cd1ebc9c-a326-4009-851b-1a3f2a703edd, miniId=1, topVer=AffinityTopologyVersion [topVer=4, minorTopVer=0], subjId=2ab5710f-6568-4940-b3cc-ce756a634f4e, taskNameHash=0, txLbl=null, flags=, super=GridDistributedTxPrepareRequest [threadId=2528, concurrency=PESSIMISTIC, isolation=REPEATABLE_READ, writeVer=GridCacheVersion [topVer=200084669, order=1588652521620, nodeOrder=3], timeout=0, reads=ArrayList [], writes=ArrayList [IgniteTxEntry [txKey=null, val=TxEntryValueHolder [val=CacheObjectImpl [val=null, hasValBytes=true], op=UPDATE], prevVal=TxEntryValueHolder [val=null, op=NOOP], oldVal=TxEntryValueHolder [val=null, op=NOOP], entryProcessorsCol=null, ttl=-1, conflictExpireTime=-1, conflictVer=null, explicitVer=null, dhtVer=null, filters=null, filtersPassed=false, filtersSet=false, entry=null, prepared=0, locked=false, nodeId=null, locMapped=false, expiryPlc=null, transferExpiryPlc=false, flags=0, partUpdateCntr=0, serReadVer=null, xidVer=null]], dhtVers=null, txSize=0, plc=2, txState=null, flags=onePhase|last|sys, super=GridDistributedBaseMessage [ver=GridCacheVersion [topVer=200084669, order=1588652521620, nodeOrder=3], committedVers=null, rolledbackVers=null, cnt=0, super=GridCacheIdMessage [cacheId=0, super=GridCacheMessage [msgId=59316562, depInfo=null, lastAffChangedTopVer=AffinityTopologyVersion [topVer=4, minorTopVer=0], err=null, skipPrepare=false]]]]]]], Message closure [msg=GridIoMessage [plc=2, topic=TOPIC_CACHE, topicOrd=8, ordered=false, timeout=0, skipOnTimeout=false, msg=GridNearGetRequest [futId=36c90d3e171-cd1ebc9c-a326-4009-851b-1a3f2a703edd, miniId=46c90d3e171-cd1ebc9c-a326-4009-851b-1a3f2a703edd, ver=null, keyMap=null, flags=1, topVer=AffinityTopologyVersion [topVer=4, minorTopVer=0], subjId=2ab5710f-6568-4940-b3cc-ce756a634f4e, taskNameHash=0, createTtl=-1, accessTtl=-1, txLbl=null, mvccSnapshot=null]]], Message closure [msg=GridIoMessage [plc=2, topic=TOPIC_CACHE, topicOrd=8, ordered=false, timeout=0, skipOnTimeout=false, msg=GridNearTxPrepareRequest [futId=39c90d3e171-cd1ebc9c-a326-4009-851b-1a3f2a703edd, miniId=1, topVer=AffinityTopologyVersion [topVer=4, minorTopVer=0], subjId=2ab5710f-6568-4940-b3cc-ce756a634f4e, taskNameHash=0, txLbl=null, flags=, super=GridDistributedTxPrepareRequest [threadId=2141, concurrency=PESSIMISTIC, isolation=REPEATABLE_READ, writeVer=GridCacheVersion [topVer=200084669, order=1588652522004, nodeOrder=3], timeout=0, reads=ArrayList [], writes=ArrayList [IgniteTxEntry [txKey=null, val=TxEntryValueHolder [val=CacheObjectImpl [val=null, hasValBytes=true], op=UPDATE], prevVal=TxEntryValueHolder [val=null, op=NOOP], oldVal=TxEntryValueHolder [val=null, op=NOOP], entryProcessorsCol=null, ttl=-1, conflictExpireTime=-1, conflictVer=null, explicitVer=null, dhtVer=null, filters=null, filtersPassed=false, filtersSet=false, entry=null, prepared=0, locked=false, nodeId=null, locMapped=false, expiryPlc=null, transferExpiryPlc=false, flags=0, partUpdateCntr=0, serReadVer=null, xidVer=null]], dhtVers=null, txSize=0, plc=2, txState=null, flags=onePhase|last|sys, super=GridDistributedBaseMessage [ver=GridCacheVersion [topVer=200084669, order=1588652522004, nodeOrder=3], committedVers=null, rolledbackVers=null, cnt=0, super=GridCacheIdMessage [cacheId=0, super=GridCacheMessage [msgId=59316868, depInfo=null, lastAffChangedTopVer=AffinityTopologyVersion [topVer=4, minorTopVer=0], err=null, skipPrepare=false]]]]]]], Message closure [msg=GridIoMessage [plc=2, topic=TOPIC_CACHE, topicOrd=8, ordered=false, timeout=0, skipOnTimeout=false, msg=GridNearGetRequest [futId=8cc90d3e171-cd1ebc9c-a326-4009-851b-1a3f2a703edd, miniId=9cc90d3e171-cd1ebc9c-a326-4009-851b-1a3f2a703edd, ver=null, keyMap=null, flags=1, topVer=AffinityTopologyVersion [topVer=4, minorTopVer=0], subjId=2ab5710f-6568-4940-b3cc-ce756a634f4e, taskNameHash=0, createTtl=-1, accessTtl=-1, txLbl=null, mvccSnapshot=null]]], Message closure [msg=GridIoMessage [plc=2, topic=TOPIC_CACHE, topicOrd=8, ordered=false, timeout=0, skipOnTimeout=false, msg=GridNearGetRequest [futId=4cd90d3e171-cd1ebc9c-a326-4009-851b-1a3f2a703edd, miniId=5cd90d3e171-cd1ebc9c-a326-4009-851b-1a3f2a703edd, ver=null, keyMap=null, flags=1, topVer=AffinityTopologyVersion [topVer=4, minorTopVer=0], subjId=2ab5710f-6568-4940-b3cc-ce756a634f4e, taskNameHash=0, createTtl=-1, accessTtl=-1, txLbl=null, mvccSnapshot=null]]], Message closure [msg=GridIoMessage [plc=2, topic=TOPIC_CACHE, topicOrd=8, ordered=false, timeout=0, skipOnTimeout=false, msg=GridNearGetRequest [futId=28e90d3e171-cd1ebc9c-a326-4009-851b-1a3f2a703edd, miniId=38e90d3e171-cd1ebc9c-a326-4009-851b-1a3f2a703edd, ver=null, keyMap=null, flags=1, topVer=AffinityTopologyVersion [topVer=4, minorTopVer=0], subjId=2ab5710f-6568-4940-b3cc-ce756a634f4e, taskNameHash=0, createTtl=-1, accessTtl=-1, txLbl=null, mvccSnapshot=null]]], Message closure [msg=GridIoMessage [plc=2, topic=TOPIC_CACHE, topicOrd=8, ordered=false, timeout=0, skipOnTimeout=false, msg=GridNearTxPrepareRequest [futId=d9e90d3e171-cd1ebc9c-a326-4009-851b-1a3f2a703edd, miniId=1, topVer=AffinityTopologyVersion [topVer=4, minorTopVer=0], subjId=2ab5710f-6568-4940-b3cc-ce756a634f4e, taskNameHash=0, txLbl=null, flags=, super=GridDistributedTxPrepareRequest [threadId=3430, concurrency=PESSIMISTIC, isolation=REPEATABLE_READ, writeVer=GridCacheVersion [topVer=200084669, order=1588652522452, nodeOrder=3], timeout=0, reads=ArrayList [], writes=ArrayList [IgniteTxEntry [txKey=null, val=TxEntryValueHolder [val=CacheObjectImpl [val=null, hasValBytes=true], op=UPDATE], prevVal=TxEntryValueHolder [val=null, op=NOOP], oldVal=TxEntryValueHolder [val=null, op=NOOP], entryProcessorsCol=null, ttl=-1, conflictExpireTime=-1, conflictVer=null, explicitVer=null, dhtVer=null, filters=null, filtersPassed=false, filtersSet=false, entry=null, prepared=0, locked=false, nodeId=null, locMapped=false, expiryPlc=null, transferExpiryPlc=false, flags=0, partUpdateCntr=0, serReadVer=null, xidVer=null]], dhtVers=null, txSize=0, plc=2, txState=null, flags=onePhase|last|sys, super=GridDistributedBaseMessage [ver=GridCacheVersion [topVer=200084669, order=1588652522452, nodeOrder=3], committedVers=null, rolledbackVers=null, cnt=0, super=GridCacheIdMessage [cacheId=0, super=GridCacheMessage [msgId=59317224, depInfo=null, lastAffChangedTopVer=AffinityTopologyVersion [topVer=4, minorTopVer=0], err=null, skipPrepare=false]]]]]]], Message closure [msg=GridIoMessage [plc=2, topic=TOPIC_CACHE, topicOrd=8, ordered=false, timeout=0, skipOnTimeout=false, msg=GridNearSingleGetRequest [futId=1588665032453, key=KeyCacheObjectImpl [part=385, val=null, hasValBytes=true], flags=1, topVer=AffinityTopologyVersion [topVer=4, minorTopVer=0], subjId=2ab5710f-6568-4940-b3cc-ce756a634f4e, taskNameHash=0, createTtl=-1, accessTtl=-1, txLbl=null, mvccSnapshot=null]]]]
    Deadlock: false
    Completed: 1094133
Thread [name="sys-stripe-1-#2", id=29, state=RUNNABLE, blockCnt=32, waitCnt=1280827]
        at o.a.i.i.processors.cache.persistence.wal.serializer.RecordDataV1Serializer.dataSize(RecordDataV1Serializer.java:2083)
        at o.a.i.i.processors.cache.persistence.wal.serializer.RecordDataV1Serializer.plainSize(RecordDataV1Serializer.java:386)
        at o.a.i.i.processors.cache.persistence.wal.serializer.RecordDataV2Serializer.plainSize(RecordDataV2Serializer.java:101)
        at o.a.i.i.processors.cache.persistence.wal.serializer.RecordDataV1Serializer.size(RecordDataV1Serializer.java:181)
        at o.a.i.i.processors.cache.persistence.wal.serializer.RecordV2Serializer$2.sizeWithHeaders(RecordV2Serializer.java:96)
        at o.a.i.i.processors.cache.persistence.wal.serializer.RecordV2Serializer.size(RecordV2Serializer.java:226)
        at o.a.i.i.processors.cache.persistence.wal.FileWriteAheadLogManager.log(FileWriteAheadLogManager.java:837)
        at o.a.i.i.processors.cache.persistence.wal.FileWriteAheadLogManager.log(FileWriteAheadLogManager.java:796)
        at o.a.i.i.processors.cache.GridCacheMapEntry.logUpdate(GridCacheMapEntry.java:4307)
        at o.a.i.i.processors.cache.GridCacheMapEntry$AtomicCacheUpdateClosure.remove(GridCacheMapEntry.java:6505)
        at o.a.i.i.processors.cache.GridCacheMapEntry$AtomicCacheUpdateClosure.call(GridCacheMapEntry.java:6177)
        at o.a.i.i.processors.cache.GridCacheMapEntry$AtomicCacheUpdateClosure.call(GridCacheMapEntry.java:5863)
        at o.a.i.i.processors.cache.persistence.tree.BPlusTree$Invoke.invokeClosure(BPlusTree.java:3820)
        at o.a.i.i.processors.cache.persistence.tree.BPlusTree$Invoke.access$5700(BPlusTree.java:3714)
        at o.a.i.i.processors.cache.persistence.tree.BPlusTree.invokeDown(BPlusTree.java:1969)
        at o.a.i.i.processors.cache.persistence.tree.BPlusTree.invokeDown(BPlusTree.java:1940)
        at o.a.i.i.processors.cache.persistence.tree.BPlusTree.invoke(BPlusTree.java:1847)
        at o.a.i.i.processors.cache.IgniteCacheOffheapManagerImpl$CacheDataStoreImpl.invoke0(IgniteCacheOffheapManagerImpl.java:1654)
        at o.a.i.i.processors.cache.IgniteCacheOffheapManagerImpl$CacheDataStoreImpl.invoke(IgniteCacheOffheapManagerImpl.java:1637)
        at o.a.i.i.processors.cache.persistence.GridCacheOffheapManager$GridCacheDataStore.invoke(GridCacheOffheapManager.java:2436)
        at o.a.i.i.processors.cache.IgniteCacheOffheapManagerImpl.invoke(IgniteCacheOffheapManagerImpl.java:433)
        at o.a.i.i.processors.cache.GridCacheMapEntry.innerUpdate(GridCacheMapEntry.java:2309)
        at o.a.i.i.processors.cache.distributed.dht.atomic.GridDhtAtomicCache.updateSingle(GridDhtAtomicCache.java:2576)
        at o.a.i.i.processors.cache.distributed.dht.atomic.GridDhtAtomicCache.update(GridDhtAtomicCache.java:2036)
        at o.a.i.i.processors.cache.distributed.dht.atomic.GridDhtAtomicCache.updateAllAsyncInternal0(GridDhtAtomicCache.java:1854)
        at o.a.i.i.processors.cache.distributed.dht.atomic.GridDhtAtomicCache.updateAllAsyncInternal(GridDhtAtomicCache.java:1668)
        at o.a.i.i.processors.cache.distributed.dht.atomic.GridDhtAtomicCache.processNearAtomicUpdateRequest(GridDhtAtomicCache.java:3241)
        at o.a.i.i.processors.cache.distributed.dht.atomic.GridDhtAtomicCache.access$400(GridDhtAtomicCache.java:139)
        at o.a.i.i.processors.cache.distributed.dht.atomic.GridDhtAtomicCache$5.apply(GridDhtAtomicCache.java:273)
        at o.a.i.i.processors.cache.distributed.dht.atomic.GridDhtAtomicCache$5.apply(GridDhtAtomicCache.java:268)
        at o.a.i.i.processors.cache.GridCacheIoManager.processMessage(GridCacheIoManager.java:1142)
        at o.a.i.i.processors.cache.GridCacheIoManager.onMessage0(GridCacheIoManager.java:591)
        at o.a.i.i.processors.cache.GridCacheIoManager.handleMessage(GridCacheIoManager.java:392)
        at o.a.i.i.processors.cache.GridCacheIoManager.handleMessage(GridCacheIoManager.java:318)
        at o.a.i.i.processors.cache.GridCacheIoManager.access$100(GridCacheIoManager.java:109)
        at o.a.i.i.processors.cache.GridCacheIoManager$1.onMessage(GridCacheIoManager.java:308)
        at o.a.i.i.managers.communication.GridIoManager.invokeListener(GridIoManager.java:1635)
        at o.a.i.i.managers.communication.GridIoManager.processRegularMessage0(GridIoManager.java:1255)
        at o.a.i.i.managers.communication.GridIoManager.access$4300(GridIoManager.java:144)
        at o.a.i.i.managers.communication.GridIoManager$8.execute(GridIoManager.java:1144)
        at o.a.i.i.managers.communication.TraceRunnable.run(TraceRunnable.java:50)
        at o.a.i.i.util.StripedExecutor$Stripe.body(StripedExecutor.java:559)
        at o.a.i.i.util.worker.GridWorker.run(GridWorker.java:119)
        at java.lang.Thread.run(Thread.java:748)

另一种类型的警告

[WARNING][grid-timeout-worker-#135][G] >>> Possible starvation in striped pool.
    Thread name: sys-stripe-0-#1
    Queue: [Message closure [msg=GridIoMessage [plc=2, topic=TOPIC_CACHE, topicOrd=8, ordered=false, timeout=0, skipOnTimeout=false, msg=GridNearGetRequest [futId=a1f90d3e171-cd1ebc9c-a326-4009-851b-1a3f2a703edd, miniId=b1f90d3e171-cd1ebc9c-a326-4009-851b-1a3f2a703edd, ver=null, keyMap=null, flags=1, topVer=AffinityTopologyVersion [topVer=4, minorTopVer=0], subjId=2ab5710f-6568-4940-b3cc-ce756a634f4e, taskNameHash=0, createTtl=-1, accessTtl=-1, txLbl=null, mvccSnapshot=null]]]]
    Deadlock: false
    Completed: 1396153
Thread [name="sys-stripe-0-#1", id=28, state=TIMED_WAITING, blockCnt=61, waitCnt=1874266]
    Lock [object=java.util.concurrent.locks.ReentrantReadWriteLock$NonfairSync@1b08480, ownerName=null, ownerId=-1]
        at sun.misc.Unsafe.park(Native Method)
        at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
        at java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedNanos(AbstractQueuedSynchronizer.java:1037)
        at java.util.concurrent.locks.AbstractQueuedSynchronizer.tryAcquireSharedNanos(AbstractQueuedSynchronizer.java:1328)
        at java.util.concurrent.locks.ReentrantReadWriteLock$ReadLock.tryLock(ReentrantReadWriteLock.java:871)
        at o.a.i.i.processors.cache.persistence.GridCacheDatabaseSharedManager.checkpointReadLock(GridCacheDatabaseSharedManager.java:1638)
        at o.a.i.i.processors.cache.distributed.dht.GridDhtTxPrepareFuture.onEntriesLocked(GridDhtTxPrepareFuture.java:368)
        at o.a.i.i.processors.cache.distributed.dht.GridDhtTxPrepareFuture.prepare0(GridDhtTxPrepareFuture.java:1304)
        at o.a.i.i.processors.cache.distributed.dht.GridDhtTxPrepareFuture.mapIfLocked(GridDhtTxPrepareFuture.java:709)
        at o.a.i.i.processors.cache.distributed.dht.GridDhtTxPrepareFuture.prepare(GridDhtTxPrepareFuture.java:1102)
        at o.a.i.i.processors.cache.distributed.dht.GridDhtTxLocal.prepareAsync(GridDhtTxLocal.java:410)
        at o.a.i.i.processors.cache.transactions.IgniteTxHandler.prepareNearTx(IgniteTxHandler.java:576)
        at o.a.i.i.processors.cache.transactions.IgniteTxHandler.prepareNearTx(IgniteTxHandler.java:373)
        at o.a.i.i.processors.cache.transactions.IgniteTxHandler.processNearTxPrepareRequest0(IgniteTxHandler.java:182)
        at o.a.i.i.processors.cache.transactions.IgniteTxHandler.processNearTxPrepareRequest(IgniteTxHandler.java:160)
        at o.a.i.i.processors.cache.transactions.IgniteTxHandler.access$000(IgniteTxHandler.java:122)
        at o.a.i.i.processors.cache.transactions.IgniteTxHandler$1.apply(IgniteTxHandler.java:204)
        at o.a.i.i.processors.cache.transactions.IgniteTxHandler$1.apply(IgniteTxHandler.java:202)
        at o.a.i.i.processors.cache.GridCacheIoManager.processMessage(GridCacheIoManager.java:1142)
        at o.a.i.i.processors.cache.GridCacheIoManager.onMessage0(GridCacheIoManager.java:591)
        at o.a.i.i.processors.cache.GridCacheIoManager.handleMessage(GridCacheIoManager.java:392)
        at o.a.i.i.processors.cache.GridCacheIoManager.handleMessage(GridCacheIoManager.java:318)
        at o.a.i.i.processors.cache.GridCacheIoManager.access$100(GridCacheIoManager.java:109)
        at o.a.i.i.processors.cache.GridCacheIoManager$1.onMessage(GridCacheIoManager.java:308)
        at o.a.i.i.managers.communication.GridIoManager.invokeListener(GridIoManager.java:1635)
        at o.a.i.i.managers.communication.GridIoManager.processRegularMessage0(GridIoManager.java:1255)
        at o.a.i.i.managers.communication.GridIoManager.access$4300(GridIoManager.java:144)
        at o.a.i.i.managers.communication.GridIoManager$8.execute(GridIoManager.java:1144)
        at o.a.i.i.managers.communication.TraceRunnable.run(TraceRunnable.java:50)
        at o.a.i.i.util.StripedExecutor$Stripe.body(StripedExecutor.java:559)
        at o.a.i.i.util.worker.GridWorker.run(GridWorker.java:119)
        at java.lang.Thread.run(Thread.java:748)

池指标

Striped thread pool [active=7, idle=57, qSize=9]

我假设由于上述警告，我们在 SQL 查询上遇到了以下延迟。

[WARNING][long-qry-#170][LongRunningQueryManager] Query execution is too long [duration=3424ms, type=MAP, distributedJoin=false, enforceJoinOrder=false, lazy=false, schema=PUBLIC, sql='SELECT
"__Z0"."ID" "__C0_0",
"__Z0"."URL" "__C0_1",
"__Z0"."SCORE" "__C0_2",
"__Z0"."APPNAME_ID" "__C0_3"
FROM "PUBLIC"."URLS" "__Z0"
WHERE "__Z0"."APPNAME_ID" = ?1
ORDER BY 3 FETCH FIRST ?2 ROWS ONLY', plan=SELECT
    __Z0.ID AS __C0_0,
    __Z0.URL AS __C0_1,
    __Z0.SCORE AS __C0_2,
    __Z0.APPNAME_ID AS __C0_3
FROM PUBLIC.URLS __Z0
    /* PUBLIC.IDX_2_URLS */
    /* scanCount: 101020 */
WHERE __Z0.APPNAME_ID = ?1
ORDER BY 3
FETCH FIRST ?2 ROWS ONLY
/* index sorted */, node=TcpDiscoveryNode [id=2ab5710f-6568-4940-b3cc-ce756a634f4e, consistentId=2ab5710f-6568-4940-b3cc-ce756a634f4e, addrs=ArrayList [0:0:0:0:0:0:0:1%lo, 127.0.0.1, 172.20.46.195], sockAddrs=HashSet [/0:0:0:0:0:0:0:1%lo:0, /127.0.0.1:0, /172.20.46.195:0], discPort=0, order=3, intOrder=3, lastExchangeTime=1588604898769, loc=false, ver=8.7.10#20191227-sha1:c481441d, isClient=true], reqId=292181, segment=0]

我们认为查询没有任何问题，因为我们对大数据进行了读/写速度测试，发现查询时间低于 10 毫秒。但这里由于数据库中的数据更少而导致延迟。

正常运行 12 小时后，检查点大约需要 1 分钟才能完成。

还有一些经常在日志中打印的警告。请在下面找到它们

2 checkpoint pages were not written yet due to unsuccessful page write lock acquisition and will be retried

Throttling is applied to page modifications [percentOfPartTime=0.62, markDirty=2440 pages/sec, checkpointWrite=1971 pages/sec, estIdealMarkDirty=0 pages/sec, curDirty=0.00, maxDirty=0.02, avgParkTime=253807 ns, pages: (total=132474, evicted=0, written=831, synced=0, cpBufUsed=543, cpBufTotal=259107)]

[sys-stripe-38-#39][GridContinuousProcessor] Failed to wait for ack message. [node=2ab5710f-6568-4940-b3cc-ce756a634f4e, routine=b24f7959-546b-4242-81d4-c51de3ce0fc2]

Page replacements started, pages will be rotated with disk, this will affect storage performance (consider increasing DataRegionConfiguration#setMaxSize for data region)

Answer 1

answer在 Ignite 用户列表中提供。