Hi

????????????????????????????????????????????????????????????????????checkpoint??????????????????????????????????????????????????cpu????????????????????gc??????????????????????????????????????????????????


Best,
Yichao Yang




------------------ ???????? ------------------
??????:&nbsp;"Tianwang Li"<litianw...@gmail.com&gt;;
????????:&nbsp;2020??6??28??(??????) ????10:17
??????:&nbsp;"user-zh"<user-zh@flink.apache.org&gt;;

????:&nbsp;Flink-1.10.0 source??checkpoint??????????????



????Flink checkpoint????????????????????????
????????????
??????flink1.10.0
??????????????10??????????????????????kafka
??????????????????????????????????????????????1??2??????????
??????????????????????????????????????????????????????????


??????
&nbsp; &nbsp; 
??????????checkpoint??????1??????????????????????checkpint????????30????????????????????????1??2??1??????
source??checkpoint??????????????????Trigger&nbsp;checkpoint ??&nbsp;Starting 
checkpoint????????????????


checkpoint??????????????













 
2020-06-24 21:09:53,369 DEBUG 
org.apache.flink.runtime.taskexecutor.TaskExecutor&nbsp; &nbsp; &nbsp; &nbsp; 
&nbsp; &nbsp; - Trigger checkpoint 316@1593004193363 for 
84dce1ec8aa5a4df2d1758d6e9278693.
 
2020-06-24 21:09:58,327 DEBUG 
org.apache.flink.runtime.taskexecutor.TaskExecutor&nbsp; &nbsp; &nbsp; &nbsp; 
&nbsp; &nbsp; - Received heartbeat request from 
e88ea2f790430c9c160e540ef0546d60.
 
2020-06-24 21:09:59,266 DEBUG 
org.apache.flink.runtime.taskexecutor.TaskExecutor&nbsp; &nbsp; &nbsp; &nbsp; 
&nbsp; &nbsp; - Received heartbeat request from 
b93d7167db364dfdcbda886944f1482f.
 
2020-06-24 21:09:59,686 INFO&nbsp; 
org.apache.flink.runtime.taskexecutor.TaskManagerRunner &nbsp; &nbsp; &nbsp; - 
Memory usage stats: [HEAP: 202/2573/2573 MB, NON HEAP: 111/114/424 MB 
(used/committed/max)]
 
2020-06-24 21:09:59,686 INFO&nbsp; 
org.apache.flink.runtime.taskexecutor.TaskManagerRunner &nbsp; &nbsp; &nbsp; - 
Direct memory stats: Count: 17403, Total Capacity: 583911423, Used Memory: 
583911424
 
2020-06-24 21:09:59,686 INFO&nbsp; 
org.apache.flink.runtime.taskexecutor.TaskManagerRunner &nbsp; &nbsp; &nbsp; - 
Off-heap pool stats: [Code Cache: 35/35/240 MB (used/committed/max)], 
[Metaspace: 67/69/96 MB (used/committed/max)], [Compressed Class Space: 8/9/88 
MB (used/committed/max)]
 
2020-06-24 21:09:59,686 INFO&nbsp; 
org.apache.flink.runtime.taskexecutor.TaskManagerRunner &nbsp; &nbsp; &nbsp; - 
Garbage collector stats: [PS Scavenge, GC TIME (ms): 108643, GC COUNT: 6981], 
[PS MarkSweep, GC TIME (ms): 1074, GC COUNT: 6]
 
2020-06-24 21:10:08,346 DEBUG 
org.apache.flink.runtime.taskexecutor.TaskExecutor&nbsp; &nbsp; &nbsp; &nbsp; 
&nbsp; &nbsp; - Received heartbeat request from 
e88ea2f790430c9c160e540ef0546d60.
 
2020-06-24 21:10:09,286 DEBUG 
org.apache.flink.runtime.taskexecutor.TaskExecutor&nbsp; &nbsp; &nbsp; &nbsp; 
&nbsp; &nbsp; - Received heartbeat request from 
b93d7167db364dfdcbda886944f1482f.
 
2020-06-24 21:10:09,686 INFO&nbsp; 
org.apache.flink.runtime.taskexecutor.TaskManagerRunner &nbsp; &nbsp; &nbsp; - 
Memory usage stats: [HEAP: 557/2573/2573 MB, NON HEAP: 111/114/424 MB 
(used/committed/max)]
 
2020-06-24 21:10:09,686 INFO&nbsp; 
org.apache.flink.runtime.taskexecutor.TaskManagerRunner &nbsp; &nbsp; &nbsp; - 
Direct memory stats: Count: 17403, Total Capacity: 583911423, Used Memory: 
583911424
 
2020-06-24 21:10:09,686 INFO&nbsp; 
org.apache.flink.runtime.taskexecutor.TaskManagerRunner &nbsp; &nbsp; &nbsp; - 
Off-heap pool stats: [Code Cache: 35/35/240 MB (used/committed/max)], 
[Metaspace: 67/69/96 MB (used/committed/max)], [Compressed Class Space: 8/9/88 
MB (used/committed/max)]
 
2020-06-24 21:10:09,686 INFO&nbsp; 
org.apache.flink.runtime.taskexecutor.TaskManagerRunner &nbsp; &nbsp; &nbsp; - 
Garbage collector stats: [PS Scavenge, GC TIME (ms): 108643, GC COUNT: 6981], 
[PS MarkSweep, GC TIME (ms): 1074, GC COUNT: 6]
 


 
????????????
 


 
2020-06-24 21:55:39,875 INFO&nbsp; 
org.apache.flink.runtime.taskexecutor.TaskManagerRunner &nbsp; &nbsp; &nbsp; - 
Direct memory stats: Count: 17403, Total Capacity: 583911423, Used Memory: 
583911424
 
2020-06-24 21:55:39,875 INFO&nbsp; 
org.apache.flink.runtime.taskexecutor.TaskManagerRunner &nbsp; &nbsp; &nbsp; - 
Off-heap pool stats: [Code Cache: 35/35/240 MB (used/committed/max)], 
[Metaspace: 67/69/96 MB (used/committed/max)], [Compressed Class Space: 8/9/88 
MB (used/committed/max)]
 
2020-06-24 21:55:39,876 INFO&nbsp; 
org.apache.flink.runtime.taskexecutor.TaskManagerRunner &nbsp; &nbsp; &nbsp; - 
Garbage collector stats: [PS Scavenge, GC TIME (ms): 110520, GC COUNT: 7083], 
[PS MarkSweep, GC TIME (ms): 1074, GC COUNT: 6]
 
2020-06-24 21:55:41,721 DEBUG 
org.apache.flink.streaming.runtime.tasks.StreamTask &nbsp; &nbsp; &nbsp; &nbsp; 
&nbsp; - Starting checkpoint (316) CHECKPOINT on task Source: Custom Source 
-&gt; Map -&gt; Filter -&gt; Timestamps/Watermarks (4/10)
 
2020-06-24 21:55:41,721 DEBUG 
org.apache.flink.runtime.state.AbstractSnapshotStrategy &nbsp; &nbsp; &nbsp; - 
DefaultOperatorStateBackend snapshot (FsCheckpointStorageLocation 
{fileSystem=org.apache.flink.core.fs.SafetyNetWrapperFileSystem@4a4b11cd, 
checkpointDirectory=hdfs://xxxxchk-316, sharedStateDirectory=hdfs://xxxxshared, 
taskOwnedStateDirectory=hdfs://xxxxtaskowned, 
metadataFilePath=hdfs://xxxxchk-316/_metadata, reference=(default), 
fileStateSizeThreshold=1024, writeBufferSize=4096}, synchronous part) in thread 
Thread[Source: Custom Source -&gt; Map -&gt; Filter -&gt; Timestamps/Watermarks 
(4/10),5,Flink Task Threads] took 0 ms.
 
2020-06-24 21:55:41,721 DEBUG 
org.apache.flink.runtime.state.AbstractSnapshotStrategy &nbsp; &nbsp; &nbsp; - 
DefaultOperatorStateBackend snapshot (FsCheckpointStorageLocation 
{fileSystem=org.apache.flink.core.fs.SafetyNetWrapperFileSystem@4a4b11cd, 
checkpointDirectory=hdfs://xxxxchk-316, sharedStateDirectory=hdfs://xxxxshared, 
taskOwnedStateDirectory=hdfs://xxxxtaskowned, 
metadataFilePath=hdfs://xxxxchk-316/_metadata, reference=(default), 
fileStateSizeThreshold=1024, writeBufferSize=4096}, synchronous part) in thread 
Thread[Source: Custom Source -&gt; Map -&gt; Filter -&gt; Timestamps/Watermarks 
(4/10),5,Flink Task Threads] took 0 ms.
 
2020-06-24 21:55:41,721 DEBUG 
org.apache.flink.runtime.state.AbstractSnapshotStrategy &nbsp; &nbsp; &nbsp; - 
DefaultOperatorStateBackend snapshot (FsCheckpointStorageLocation 
{fileSystem=org.apache.flink.core.fs.SafetyNetWrapperFileSystem@4a4b11cd, 
checkpointDirectory=hdfs://xxxxchk-316, sharedStateDirectory=hdfs://xxxxshared, 
taskOwnedStateDirectory=hdfs://xxxxtaskowned, 
metadataFilePath=hdfs://xxxxchk-316/_metadata, reference=(default), 
fileStateSizeThreshold=1024, writeBufferSize=4096}, synchronous part) in thread 
Thread[Source: Custom Source -&gt; Map -&gt; Filter -&gt; Timestamps/Watermarks 
(4/10),5,Flink Task Threads] took 0 ms.
 
2020-06-24 21:55:41,721 DEBUG 
org.apache.flink.runtime.state.AbstractSnapshotStrategy &nbsp; &nbsp; &nbsp; - 
DefaultOperatorStateBackend snapshot (FsCheckpointStorageLocation 
{fileSystem=org.apache.flink.core.fs.SafetyNetWrapperFileSystem@4a4b11cd, 
checkpointDirectory=hdfs://xxxxchk-316, sharedStateDirectory=hdfs://xxxxshared, 
taskOwnedStateDirectory=hdfs://xxxxtaskowned, 
metadataFilePath=hdfs://xxxxchk-316/_metadata, reference=(default), 
fileStateSizeThreshold=1024, writeBufferSize=4096}, synchronous part) in thread 
Thread[Source: Custom Source -&gt; Map -&gt; Filter -&gt; Timestamps/Watermarks 
(4/10),5,Flink Task Threads] took 0 ms.
 
2020-06-24 21:55:41,721 DEBUG 
org.apache.flink.streaming.runtime.tasks.StreamTask &nbsp; &nbsp; &nbsp; &nbsp; 
&nbsp; - Finished synchronous checkpoints for checkpoint 316 on task Source: 
Custom Source -&gt; Map -&gt; Filter -&gt; Timestamps/Watermarks (4/10)
 
2020-06-24 21:55:41,721 DEBUG 
org.apache.flink.streaming.runtime.tasks.StreamTask &nbsp; &nbsp; &nbsp; &nbsp; 
&nbsp; - Source: Custom Source -&gt; Map -&gt; Filter -&gt; 
Timestamps/Watermarks (4/10) - finished synchronous part of checkpoint 316. 
Alignment duration: 0 ms, snapshot duration 0 ms
 
2020-06-24 21:55:41,737 DEBUG 
org.apache.flink.runtime.state.AbstractSnapshotStrategy &nbsp; &nbsp; &nbsp; - 
DefaultOperatorStateBackend snapshot (FsCheckpointStorageLocation 
{fileSystem=org.apache.flink.core.fs.SafetyNetWrapperFileSystem@4a4b11cd, 
checkpointDirectory=hdfs://xxxxchk-316, sharedStateDirectory=hdfs://xxxxshared, 
taskOwnedStateDirectory=hdfs://xxxxtaskowned, 
metadataFilePath=hdfs://xxxxchk-316/_metadata, reference=(default), 
fileStateSizeThreshold=1024, writeBufferSize=4096}, asynchronous part) in 
thread Thread[AsyncOperations-thread-316,5,Flink Task Threads] took 16 ms.
 
2020-06-24 21:55:41,738 DEBUG 
org.apache.flink.streaming.runtime.tasks.StreamTask &nbsp; &nbsp; &nbsp; &nbsp; 
&nbsp; - Source: Custom Source -&gt; Map -&gt; Filter -&gt; 
Timestamps/Watermarks (4/10) - finished asynchronous part of checkpoint 316. 
Asynchronous duration: 16 ms
 
2020-06-24 21:55:42,008 DEBUG 
org.apache.flink.streaming.runtime.io.CheckpointBarrierAligner&nbsp; - 
Window(SlidingEventTimeWindows(10800000, 300000, 0), EventTimeTrigger, anon$11, 
ScalaProcessWindowFunctionWrapper) -&gt; Map (10/10) 
(a608e8a1ab75622dc57f164bdbb86743): Received barrier from channel 3.
 
2020-06-24 21:55:42,008 DEBUG 
org.apache.flink.streaming.runtime.io.CheckpointBarrierAligner&nbsp; - 
Window(SlidingEventTimeWindows(10800000, 300000, 0), EventTimeTrigger, anon$11, 
ScalaProcessWindowFunctionWrapper) -&gt; Map (10/10) 
(a608e8a1ab75622dc57f164bdbb86743): Starting stream alignment for checkpoint 
316.
 
2020-06-24 21:55:42,110 DEBUG 
org.apache.flink.streaming.runtime.io.CheckpointBarrierAligner&nbsp; - 
Window(SlidingEventTimeWindows(10800000, 300000, 0), EventTimeTrigger, anon$11, 
ScalaProcessWindowFunctionWrapper) -&gt; Map (10/10) 
(a608e8a1ab75622dc57f164bdbb86743): Received barrier from channel 7.
 
2020-06-24 21:55:42,110 DEBUG 
org.apache.flink.streaming.runtime.io.CheckpointBarrierAligner&nbsp; - 
Window(SlidingEventTimeWindows(10800000, 300000, 0), EventTimeTrigger, anon$11, 
ScalaProcessWindowFunctionWrapper) -&gt; Map (10/10) 
(a608e8a1ab75622dc57f164bdbb86743): Received barrier from channel 2.
 
2020-06-24 21:55:42,110 DEBUG 
org.apache.flink.streaming.runtime.io.CheckpointBarrierAligner&nbsp; - 
Window(SlidingEventTimeWindows(10800000, 300000, 0), EventTimeTrigger, anon$11, 
ScalaProcessWindowFunctionWrapper) -&gt; Map (10/10) 
(a608e8a1ab75622dc57f164bdbb86743): Received barrier from channel 8.
 
2020-06-24 21:55:42,110 DEBUG 
org.apache.flink.streaming.runtime.io.CheckpointBarrierAligner&nbsp; - 
Window(SlidingEventTimeWindows(10800000, 300000, 0), EventTimeTrigger, anon$11, 
ScalaProcessWindowFunctionWrapper) -&gt; Map (10/10) 
(a608e8a1ab75622dc57f164bdbb86743): Received barrier from channel 6.
 
2020-06-24 21:55:42,110 DEBUG 
org.apache.flink.streaming.runtime.io.CheckpointBarrierAligner&nbsp; - 
Window(SlidingEventTimeWindows(10800000, 300000, 0), EventTimeTrigger, anon$11, 
ScalaProcessWindowFunctionWrapper) -&gt; Map (10/10) 
(a608e8a1ab75622dc57f164bdbb86743): Received barrier from channel 0.
 
2020-06-24 21:55:42,110 DEBUG 
org.apache.flink.streaming.runtime.io.CheckpointBarrierAligner&nbsp; - 
Window(SlidingEventTimeWindows(10800000, 300000, 0), EventTimeTrigger, anon$11, 
ScalaProcessWindowFunctionWrapper) -&gt; Map (10/10) 
(a608e8a1ab75622dc57f164bdbb86743): Received barrier from channel 5.
 
2020-06-24 21:55:42,110 DEBUG 
org.apache.flink.streaming.runtime.io.CheckpointBarrierAligner&nbsp; - 
Window(SlidingEventTimeWindows(10800000, 300000, 0), EventTimeTrigger, anon$11, 
ScalaProcessWindowFunctionWrapper) -&gt; Map (10/10) 
(a608e8a1ab75622dc57f164bdbb86743): Received barrier from channel 9.
 
2020-06-24 21:55:42,110 DEBUG 
org.apache.flink.streaming.runtime.io.CheckpointBarrierAligner&nbsp; - 
Window(SlidingEventTimeWindows(10800000, 300000, 0), EventTimeTrigger, anon$11, 
ScalaProcessWindowFunctionWrapper) -&gt; Map (10/10) 
(a608e8a1ab75622dc57f164bdbb86743): Received barrier from channel 4.
 
2020-06-24 21:55:42,110 DEBUG 
org.apache.flink.streaming.runtime.io.CheckpointBarrierAligner&nbsp; - 
Window(SlidingEventTimeWindows(10800000, 300000, 0), EventTimeTrigger, anon$11, 
ScalaProcessWindowFunctionWrapper) -&gt; Map (10/10) 
(a608e8a1ab75622dc57f164bdbb86743): Received barrier from channel 1.
 
2020-06-24 21:55:42,110 DEBUG 
org.apache.flink.streaming.runtime.io.CheckpointBarrierAligner&nbsp; - 
Window(SlidingEventTimeWindows(10800000, 300000, 0), EventTimeTrigger, anon$11, 
ScalaProcessWindowFunctionWrapper) -&gt; Map (10/10) 
(a608e8a1ab75622dc57f164bdbb86743): Received all barriers, triggering 
checkpoint 316 at 1593004193363.
 
2020-06-24 21:55:42,110 DEBUG 
org.apache.flink.streaming.runtime.io.CheckpointBarrierAligner&nbsp; - 
Window(SlidingEventTimeWindows(10800000, 300000, 0), EventTimeTrigger, anon$11, 
ScalaProcessWindowFunctionWrapper) -&gt; Map (10/10) 
(a608e8a1ab75622dc57f164bdbb86743): End of stream alignment, feeding buffered 
data back.
 
2020-06-24 21:55:42,110 DEBUG 
org.apache.flink.streaming.runtime.tasks.StreamTask &nbsp; &nbsp; &nbsp; &nbsp; 
&nbsp; - Starting checkpoint (316) CHECKPOINT on task 
Window(SlidingEventTimeWindows(10800000, 300000, 0), EventTimeTrigger, anon$11, 
ScalaProcessWindowFunctionWrapper) -&gt; Map (10/10)
 
2020-06-24 21:55:42,110 DEBUG 
org.apache.flink.runtime.state.AbstractSnapshotStrategy &nbsp; &nbsp; &nbsp; - 
DefaultOperatorStateBackend snapshot (FsCheckpointStorageLocation 
{fileSystem=org.apache.flink.core.fs.SafetyNetWrapperFileSystem@61164119, 
checkpointDirectory=hdfs://xxxxchk-316, sharedStateDirectory=hdfs://xxxxshared, 
taskOwnedStateDirectory=hdfs://xxxxtaskowned, 
metadataFilePath=hdfs://xxxxchk-316/_metadata, reference=(default), 
fileStateSizeThreshold=1024, writeBufferSize=4096}, synchronous part) in thread 
Thread[Window(SlidingEventTimeWindows(10800000, 300000, 0), EventTimeTrigger, 
anon$11, ScalaProcessWindowFunctionWrapper) -&gt; Map (10/10),5,Flink Task 
Threads] took 0 ms.
 
2020-06-24 21:55:42,110 DEBUG 
org.apache.flink.runtime.state.AbstractSnapshotStrategy &nbsp; &nbsp; &nbsp; - 
DefaultOperatorStateBackend snapshot (FsCheckpointStorageLocation 
{fileSystem=org.apache.flink.core.fs.SafetyNetWrapperFileSystem@61164119, 
checkpointDirectory=hdfs://xxxxchk-316, sharedStateDirectory=hdfs://xxxxshared, 
taskOwnedStateDirectory=hdfs://xxxxtaskowned, 
metadataFilePath=hdfs://xxxxchk-316/_metadata, reference=(default), 
fileStateSizeThreshold=1024, writeBufferSize=4096}, synchronous part) in thread 
Thread[Window(SlidingEventTimeWindows(10800000, 300000, 0), EventTimeTrigger, 
anon$11, ScalaProcessWindowFunctionWrapper) -&gt; Map (10/10),5,Flink Task 
Threads] took 0 ms.
 
2020-06-24 21:55:42,980 DEBUG 
org.apache.flink.runtime.state.AbstractSnapshotStrategy &nbsp; &nbsp; &nbsp; - 
Asynchronous incremental RocksDB snapshot (FsCheckpointStorageLocation 
{fileSystem=org.apache.flink.core.fs.SafetyNetWrapperFileSystem@61164119, 
checkpointDirectory=hdfs://xxxx/chk-316, 
sharedStateDirectory=hdfs://xxxx/shared, 
taskOwnedStateDirectory=hdfs://xxxx/taskowned, 
metadataFilePath=hdfs://xxxx/chk-316/_metadata, reference=(default), 
fileStateSizeThreshold=1024, writeBufferSize=4096}, synchronous part) in thread 
Thread[Window(SlidingEventTimeWindows(10800000, 300000, 0), EventTimeTrigger, 
anon$11, ScalaProcessWindowFunctionWrapper) -&gt; Map (10/10),5,Flink Task 
Threads] took 870 ms.
 
2020-06-24 21:55:42,981 DEBUG 
org.apache.flink.streaming.runtime.tasks.StreamTask &nbsp; &nbsp; &nbsp; &nbsp; 
&nbsp; - Finished synchronous checkpoints for checkpoint 316 on task 
Window(SlidingEventTimeWindows(10800000, 300000, 0), EventTimeTrigger, anon$11, 
ScalaProcessWindowFunctionWrapper) -&gt; Map (10/10)
 
2020-06-24 21:55:42,981 DEBUG 
org.apache.flink.streaming.runtime.tasks.StreamTask &nbsp; &nbsp; &nbsp; &nbsp; 
&nbsp; - Window(SlidingEventTimeWindows(10800000, 300000, 0), EventTimeTrigger, 
anon$11, ScalaProcessWindowFunctionWrapper) -&gt; Map (10/10) - finished 
synchronous part of checkpoint 316. Alignment duration: 101 ms, snapshot 
duration 870 ms
 
2020-06-24 21:55:42,981 DEBUG 
org.apache.flink.streaming.runtime.io.CachedBufferStorage &nbsp; &nbsp; - 
Window(SlidingEventTimeWindows(10800000, 300000, 0), EventTimeTrigger, anon$11, 
ScalaProcessWindowFunctionWrapper) -&gt; Map (10/10) 
(a608e8a1ab75622dc57f164bdbb86743): Size of buffered data: 98304 bytes
 
2020-06-24 21:55:42,981 DEBUG 
org.apache.flink.streaming.runtime.io.CachedBufferStorage &nbsp; &nbsp; - 
Window(SlidingEventTimeWindows(10800000, 300000, 0), EventTimeTrigger, anon$11, 
ScalaProcessWindowFunctionWrapper) -&gt; Map (10/10) 
(a608e8a1ab75622dc57f164bdbb86743): Finished feeding back buffered data.
 
2020-06-24 21:55:43,814 DEBUG 
org.apache.flink.runtime.taskexecutor.TaskExecutor&nbsp; &nbsp; &nbsp; &nbsp; 
&nbsp; &nbsp; - Received heartbeat request from 
e88ea2f790430c9c160e540ef0546d60.
 
2020-06-24 21:55:44,758 DEBUG 
org.apache.flink.runtime.taskexecutor.TaskExecutor&nbsp; &nbsp; &nbsp; &nbsp; 
&nbsp; &nbsp; - Received heartbeat request from 
b93d7167db364dfdcbda886944f1482f.
 
2020-06-24 21:55:45,714 DEBUG 
org.apache.flink.runtime.state.AbstractSnapshotStrategy &nbsp; &nbsp; &nbsp; - 
Asynchronous incremental RocksDB snapshot (FsCheckpointStorageLocation 
{fileSystem=org.apache.flink.core.fs.SafetyNetWrapperFileSystem@61164119, 
checkpointDirectory=hdfs://xxxx/chk-316, 
sharedStateDirectory=hdfs://xxxx/shared, 
taskOwnedStateDirectory=hdfs://xxxx/taskowned, 
metadataFilePath=hdfs://xxxx/chk-316/_metadata, reference=(default), 
fileStateSizeThreshold=1024, writeBufferSize=4096}, asynchronous part) in 
thread Thread[AsyncOperations-thread-316,5,Flink Task Threads] took 2733 ms.
 
2020-06-24 21:55:45,715 DEBUG 
org.apache.flink.streaming.runtime.tasks.StreamTask &nbsp; &nbsp; &nbsp; &nbsp; 
&nbsp; - Window(SlidingEventTimeWindows(10800000, 300000, 0), EventTimeTrigger, 
anon$11, ScalaProcessWindowFunctionWrapper) -&gt; Map (10/10) - finished 
asynchronous part of checkpoint 316. Asynchronous duration: 2734 ms
 
2020-06-24 21:55:49,876 INFO&nbsp; 
org.apache.flink.runtime.taskexecutor.TaskManagerRunner &nbsp; &nbsp; &nbsp; - 
Memory usage stats: [HEAP: 220/2589/2589 MB, NON HEAP: 111/114/424 MB 
(used/committed/max)]
 
2020-06-24 21:55:49,876 INFO&nbsp; 
org.apache.flink.runtime.taskexecutor.TaskManagerRunner &nbsp; &nbsp; &nbsp; - 
Direct memory stats: Count: 17414, Total Capacity: 584128352, Used Memory: 
584128353
 
2020-06-24 21:55:49,876 INFO&nbsp; 
org.apache.flink.runtime.taskexecutor.TaskManagerRunner &nbsp; &nbsp; &nbsp; - 
Off-heap pool stats: [Code Cache: 35/35/240 MB (used/committed/max)], 
[Metaspace: 67/69/96 MB (used/committed/max)], [Compressed Class Space: 8/9/88 
MB (used/committed/max)]
 
2020-06-24 21:55:49,876 INFO&nbsp; 
org.apache.flink.runtime.taskexecutor.TaskManagerRunner &nbsp; &nbsp; &nbsp; - 
Garbage collector stats: [PS Scavenge, GC TIME (ms): 110525, GC COUNT: 7084], 
[PS MarkSweep, GC TIME (ms): 1074, GC COUNT: 6]





-- 
**************************************
&nbsp;tivanli
**************************************

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