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Posted to user@cassandra.apache.org by MyWorld <ti...@gmail.com> on 2020/12/23 15:04:56 UTC

Operation timeout error from Apache Cassandra 3.11.6

Hi,

We are currently using apache cassandra 3.11.6. We have a cluster of 4
nodes all in single DC.
All of a sudden we started experiencing high connection timeout on the
cluster. This timeout spikes are coming intermittently.
As checked from grafana, read/write time, jvm threads count, client counts
got increased at the same time. But there isn't any major GC pause at this
time.

*On client side* :
Using Local Quorum read/write and getting error Operation timed out -
received only 1 responses

*On checking debug.log:*

DEBUG [Native-Transport-Requests-39] 2020-12-23 15:05:26,843
ReadCallback.java:132 - Timed out; received 2 of 3 responses (including
data)
DEBUG [Native-Transport-Requests-16] 2020-12-23 15:05:27,016
ReadCallback.java:132 - Timed out; received 2 of 3 responses (including
data)
DEBUG [Native-Transport-Requests-47] 2020-12-23 15:05:30,627
ReadCallback.java:132 - Timed out; received 0 of 1 responses
DEBUG [Native-Transport-Requests-35] 2020-12-23 15:05:31,163
ReadCallback.java:132 - Timed out; received 2 of 3 responses (including
data)
DEBUG [Native-Transport-Requests-54] 2020-12-23 15:05:31,481
ReadCallback.java:132 - Timed out; received 2 of 3 responses (including
data)
DEBUG [Native-Transport-Requests-7] 2020-12-23 15:05:33,740
ReadCallback.java:132 - Timed out; received 2 of 3 responses (including
data)
DEBUG [Native-Transport-Requests-8] 2020-12-23 15:05:37,479
ReadCallback.java:132 - Timed out; received 2 of 3 responses (including
data)
INFO  [ScheduledTasks:1] 2020-12-23 15:05:43,287 StatusLogger.java:47 -
Pool Name                    Active   Pending      Completed   Blocked  All
Time Blocked
INFO  [ScheduledTasks:1] 2020-12-23 15:05:43,295 StatusLogger.java:51 -
MutationStage                     0         0       19306477         0
            0
INFO  [ScheduledTasks:1] 2020-12-23 15:05:43,295 StatusLogger.java:51 -
ViewMutationStage                 0         0              0         0
            0
INFO  [ScheduledTasks:1] 2020-12-23 15:05:43,295 StatusLogger.java:51 -
ReadStage                         1         0      338493026         0
            0
INFO  [ScheduledTasks:1] 2020-12-23 15:05:43,296 StatusLogger.java:51 -
RequestResponseStage              0         0      181164440         0
            0
INFO  [ScheduledTasks:1] 2020-12-23 15:05:43,296 StatusLogger.java:51 -
ReadRepairStage                   0         0       90518075         0
            0
INFO  [ScheduledTasks:1] 2020-12-23 15:05:43,296 StatusLogger.java:51 -
CounterMutationStage              0         0              0         0
            0
INFO  [ScheduledTasks:1] 2020-12-23 15:05:43,297 StatusLogger.java:51 -
MiscStage                         0         0              0         0
            0
INFO  [ScheduledTasks:1] 2020-12-23 15:05:43,297 StatusLogger.java:51 -
CompactionExecutor                0         0         390126         0
            0
INFO  [ScheduledTasks:1] 2020-12-23 15:05:43,297 StatusLogger.java:51 -
MemtableReclaimMemory             0         0            335         0
            0
INFO  [ScheduledTasks:1] 2020-12-23 15:05:43,297 StatusLogger.java:51 -
PendingRangeCalculator            0         0              6         0
            0
INFO  [ScheduledTasks:1] 2020-12-23 15:05:43,298 StatusLogger.java:51 -
GossipStage                       0         0         479616         0
            0
INFO  [ScheduledTasks:1] 2020-12-23 15:05:43,298 StatusLogger.java:51 -
SecondaryIndexManagement          0         0              0         0
            0
INFO  [ScheduledTasks:1] 2020-12-23 15:05:43,298 StatusLogger.java:51 -
HintsDispatcher                   0         0            242         0
            0
INFO  [ScheduledTasks:1] 2020-12-23 15:05:43,299 StatusLogger.java:51 -
MigrationStage                    0         0              7         0
            0
INFO  [ScheduledTasks:1] 2020-12-23 15:05:43,299 StatusLogger.java:51 -
MemtablePostFlush                 0         0            367         0
            0
INFO  [ScheduledTasks:1] 2020-12-23 15:05:43,299 StatusLogger.java:51 -
PerDiskMemtableFlushWriter_0         0         0            335         0
              0
INFO  [ScheduledTasks:1] 2020-12-23 15:05:43,300 StatusLogger.java:51 -
ValidationExecutor                0         0             19         0
            0
INFO  [ScheduledTasks:1] 2020-12-23 15:05:43,300 StatusLogger.java:51 -
Sampler                           0         0              0         0
            0
INFO  [ScheduledTasks:1] 2020-12-23 15:05:43,300 StatusLogger.java:51 -
MemtableFlushWriter               0         0            335         0
            0
INFO  [ScheduledTasks:1] 2020-12-23 15:05:43,300 StatusLogger.java:51 -
InternalResponseStage             0         0         464309         0
            0
INFO  [ScheduledTasks:1] 2020-12-23 15:05:43,301 StatusLogger.java:51 -
AntiEntropyStage                  0         0             70         0
            0
INFO  [ScheduledTasks:1] 2020-12-23 15:05:43,301 StatusLogger.java:51 -
CacheCleanupExecutor              0         0              0         0
            0
INFO  [ScheduledTasks:1] 2020-12-23 15:05:43,301 StatusLogger.java:51 -
Native-Transport-Requests         2         0      122590798         0
            0
INFO  [ScheduledTasks:1] 2020-12-23 15:05:43,302 StatusLogger.java:61 -
CompactionManager                 0         0
INFO  [ScheduledTasks:1] 2020-12-23 15:05:43,302 StatusLogger.java:73 -
MessagingService                n/a       0/0
INFO  [ScheduledTasks:1] 2020-12-23 15:05:43,302 StatusLogger.java:83 -
Cache Type                     Size                 Capacity
KeysToSave
INFO  [ScheduledTasks:1] 2020-12-23 15:05:43,302 StatusLogger.java:85 -
KeyCache                  524287984                524288000
       all
INFO  [ScheduledTasks:1] 2020-12-23 15:05:43,302 StatusLogger.java:91 -
RowCache                 6442302399               6442450944
       all

Please help in debugging.

Regards,
Ashish