hf200012 opened a new issue #5635:
URL: https://github.com/apache/incubator-doris/issues/5635


   This problem did not occur in version 0.13.15 
   The specific phenomenon is as follows :
   Stream load task error, report: failed to call frontend service
   The number of txns quickly reached the upper limit:errCode = 2, 
detailMessage = current running txns on db 11001 is 150, larger than limit 150
   
   View backends heartbeat loss 
   
[https://github.com/hf200012/images/blob/master/doris/20210412145426.png](url)
   
   Restart BE, the log shows that the heartbeat of FE has not been received 
   
   To check transactions, it shows that many tasks are not over :
   
[https://github.com/hf200012/images/blob/master/doris/20210412145444.png](url)
   
   **Finally, only restart FE, and then return to normal** 
   
   Fe master keeps refreshing the following logs :
   2021-04-12 11:45:43,053 WARN (thrift-server-pool-297|673) 
[ReportHandler.putToQueue():182] the report queue size exceeds the limit: 120. 
current: 121
   2021-04-12 11:45:43,060 INFO (tablet scheduler|39) 
[BeLoadRebalancer.selectAlternativeTabletsForCluster():105] get number of low 
load paths: 10, with medium: HDD
   2021-04-12 11:45:43,061 INFO (tablet scheduler|39) 
[BeLoadRebalancer.selectAlternativeTabletsForCluster():186] select alternative 
tablets for cluster: default_cluster, medium: HDD, num: 2, detail: [5092902, 
5092902]
   2021-04-12 11:45:43,061 INFO (tablet scheduler|39) 
[BeLoadRebalancer.selectAlternativeTabletsForCluster():84] cluster is balance: 
default_cluster with medium: SSD. skip
   2021-04-12 11:45:43,119 INFO (txnCleaner|69) 
[DatabaseTransactionMgr.removeExpiredTxns():1101] transaction [17605972] is 
expired, remove it from transaction manager
   2021-04-12 11:45:43,165 INFO (txnCleaner|69) 
[DatabaseTransactionMgr.removeExpiredTxns():1101] transaction [17605973] is 
expired, remove it from transaction manager
   2021-04-12 11:45:43,211 INFO (txnCleaner|69) 
[DatabaseTransactionMgr.removeExpiredTxns():1101] transaction [17605974] is 
expired, remove it from transaction manager
   2021-04-12 11:45:43,257 INFO (txnCleaner|69) 
[DatabaseTransactionMgr.removeExpiredTxns():1101] transaction [17605979] is 
expired, remove it from transaction manager
   2021-04-12 11:45:43,302 INFO (txnCleaner|69) 
[DatabaseTransactionMgr.removeExpiredTxns():1101] transaction [17605981] is 
expired, remove it from transaction manager
   2021-04-12 11:45:43,348 INFO (txnCleaner|69) 
[DatabaseTransactionMgr.removeExpiredTxns():1101] transaction [17605984] is 
expired, remove it from transaction manager
   2021-04-12 11:45:43,400 INFO (txnCleaner|69) 
[DatabaseTransactionMgr.removeExpiredTxns():1101] transaction [17605985] is 
expired, remove it from transaction manager
   2021-04-12 11:45:43,451 INFO (txnCleaner|69) 
[DatabaseTransactionMgr.removeExpiredTxns():1101] transaction [17605986] is 
expired, remove it from transaction manager
   2021-04-12 11:45:43,502 INFO (txnCleaner|69) 
[DatabaseTransactionMgr.removeExpiredTxns():1101] transaction [17606000] is 
expired, remove it from transaction manager
   2021-04-12 11:45:43,554 INFO (txnCleaner|69) 
[DatabaseTransactionMgr.removeExpiredTxns():1101] transaction [17606001] is 
expired, remove it from transaction manager
   2021-04-12 11:45:43,605 INFO (txnCleaner|69) 
[DatabaseTransactionMgr.removeExpiredTxns():1101] transaction [17606007] is 
expired, remove it from transaction manager
   2021-04-12 11:45:43,663 INFO (txnCleaner|69) 
[DatabaseTransactionMgr.removeExpiredTxns():1101] transaction [17606008] is 
expired, remove it from transaction manager
   2021-04-12 11:45:43,720 INFO (txnCleaner|69) 
[DatabaseTransactionMgr.removeExpiredTxns():1101] transaction [17606009] is 
expired, remove it from transaction manager
   2021-04-12 11:45:43,771 INFO (txnCleaner|69) 
[DatabaseTransactionMgr.removeExpiredTxns():1101] transaction [17606017] is 
expired, remove it from transaction manager
   2021-04-12 11:45:43,823 INFO (txnCleaner|69) 
[DatabaseTransactionMgr.removeExpiredTxns():1101] transaction [17606018] is 
expired, remove it from transaction manager
   2021-04-12 11:45:43,874 INFO (txnCleaner|69) 
[DatabaseTransactionMgr.removeExpiredTxns():1101] transaction [17606031] is 
expired, remove it from transaction manager
   2021-04-12 11:45:43,926 INFO (txnCleaner|69) 
[DatabaseTransactionMgr.removeExpiredTxns():1101] transaction [17606033] is 
expired, remove it from transaction manager
   2021-04-12 11:45:43,977 INFO (txnCleaner|69) 
[DatabaseTransactionMgr.removeExpiredTxns():1101] transaction [17606034] is 
expired, remove it from transaction manager
   2021-04-12 11:45:44,029 INFO (txnCleaner|69) 
[DatabaseTransactionMgr.removeExpiredTxns():1101] transaction [17606040] is 
expired, remove it from transaction manager
   2021-04-12 11:45:44,061 INFO (tablet scheduler|39) 
[BeLoadRebalancer.selectAlternativeTabletsForCluster():105] get number of low 
load paths: 10, with medium: HDD
   2021-04-12 11:45:44,062 INFO (tablet scheduler|39) 
[BeLoadRebalancer.selectAlternativeTabletsForCluster():186] select alternative 
tablets for cluster: default_cluster, medium: HDD, num: 2, detail: [5092902, 
5092902]
   2021-04-12 11:45:44,062 INFO (tablet scheduler|39) 
[BeLoadRebalancer.selectAlternativeTabletsForCluster():84] cluster is balance: 
default_cluster with medium: SSD. skip
   2021-04-12 11:45:44,080 INFO (txnCleaner|69) 
[DatabaseTransactionMgr.removeExpiredTxns():1101] transaction [17606041] is 
expired, remove it from transaction manager
   2021-04-12 11:45:44,132 INFO (txnCleaner|69) 
[DatabaseTransactionMgr.removeExpiredTxns():1101] transaction [17606045] is 
expired, remove it from transaction manager
   2021-04-12 11:45:44,183 INFO (txnCleaner|69) 
[DatabaseTransactionMgr.removeExpiredTxns():1101] transaction [17606046] is 
expired, remove it from transaction manager
   2021-04-12 11:45:44,235 INFO (txnCleaner|69) 
[DatabaseTransactionMgr.removeExpiredTxns():1101] transaction [17606047] is 
expired, remove it from transaction manager
   2021-04-12 11:45:44,286 INFO (txnCleaner|69) 
[DatabaseTransactionMgr.removeExpiredTxns():1101] transaction [17606074] is 
expired, remove it from transaction manager
   2021-04-12 11:45:44,338 INFO (txnCleaner|69) 
[DatabaseTransactionMgr.removeExpiredTxns():1101] transaction [17606075] is 
expired, remove it from transaction manager
   2021-04-12 11:45:44,389 INFO (txnCleaner|69) 
[DatabaseTransactionMgr.removeExpiredTxns():1101] transaction [17606081] is 
expired, remove it from transaction manager
   2021-04-12 11:45:44,441 INFO (txnCleaner|69) 
[DatabaseTransactionMgr.removeExpiredTxns():1101] transaction [17606082] is 
expired, remove it from transaction manager
   2021-04-12 11:45:44,492 INFO (txnCleaner|69) 
[DatabaseTransactionMgr.removeExpiredTxns():1101] transaction [17606083] is 
expired, remove it from transaction manager
   2021-04-12 11:45:44,544 INFO (txnCleaner|69) 
[DatabaseTransactionMgr.removeExpiredTxns():1101] transaction [17606089] is 
expired, remove it from transaction manager
   2021-04-12 11:45:44,595 INFO (txnCleaner|69) 
[DatabaseTransactionMgr.removeExpiredTxns():1101] transaction [17606092] is 
expired, remove it from transaction manager
   2021-04-12 11:45:44,647 INFO (txnCleaner|69) 
[DatabaseTransactionMgr.removeExpiredTxns():1101] transaction [17606107] is 
expired, remove it from transaction manager
   2021-04-12 11:45:44,698 INFO (txnCleaner|69) 
[DatabaseTransactionMgr.removeExpiredTxns():1101] transaction [17606109] is 
expired, remove it from transaction manager
   2021-04-12 11:45:44,750 INFO (txnCleaner|69) 
[DatabaseTransactionMgr.removeExpiredTxns():1101] transaction [17606111] is 
expired, remove it from transaction manager
   2021-04-12 11:45:44,801 INFO (txnCleaner|69) 
[DatabaseTransactionMgr.removeExpiredTxns():1101] transaction [17606119] is 
expired, remove it from transaction manager
   2021-04-12 11:45:44,853 INFO (txnCleaner|69) 
[DatabaseTransactionMgr.removeExpiredTxns():1101] transaction [17606120] is 
expired, remove it from transaction manager
   2021-04-12 11:45:44,904 INFO (txnCleaner|69) 
[DatabaseTransactionMgr.removeExpiredTxns():1101] transaction [17606124] is 
expired, remove it from transaction manager
   2021-04-12 11:45:44,956 INFO (txnCleaner|69) 
[DatabaseTransactionMgr.removeExpiredTxns():1101] transaction [17606125] is 
expired, remove it from transaction manager
   2021-04-12 11:45:45,007 INFO (txnCleaner|69) 
[DatabaseTransactionMgr.removeExpiredTxns():1101] transaction [17606126] is 
expired, remove it from transaction manager
   2021-04-12 11:45:45,022 WARN (thrift-server-pool-852|14940) 
[ReportHandler.putToQueue():182] the report queue size exceeds the limit: 120. 
current: 121
   2021-04-12 11:45:45,062 INFO (tablet scheduler|39) 
[BeLoadRebalancer.selectAlternativeTabletsForCluster():105] get number of low 
load paths: 10, with medium: HDD
   2021-04-12 11:45:45,063 INFO (tablet scheduler|39) 
[BeLoadRebalancer.selectAlternativeTabletsForCluster():186] select alternative 
tablets for cluster: default_cluster, medium: HDD, num: 2, detail: [5092902, 
5092902]
   2021-04-12 11:45:45,063 INFO (tablet scheduler|39) 
[BeLoadRebalancer.selectAlternativeTabletsForCluster():84] cluster is balance: 
default_cluster with medium: SSD. skip
   2021-04-12 11:45:45,066 INFO (txnCleaner|69) 
[DatabaseTransactionMgr.removeExpiredTxns():1101] transaction [17606135] is 
expired, remove it from transaction manager
   2021-04-12 11:45:45,123 INFO (txnCleaner|69) 
[DatabaseTransactionMgr.removeExpiredTxns():1101] transaction [17606136] is 
expired, remove it from transaction manager
   


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