[jira] [Updated] (CASSANDRA-9129) HintedHandoff in pending state forever after upgrading to 2.0.14 from 2.0.11 and 2.0.12

2015-12-04 Thread Sam Tunnicliffe (JIRA)

 [ 
https://issues.apache.org/jira/browse/CASSANDRA-9129?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Sam Tunnicliffe updated CASSANDRA-9129:
---
Component/s: Observability

> HintedHandoff in pending state forever after upgrading to 2.0.14 from 2.0.11 
> and 2.0.12
> ---
>
> Key: CASSANDRA-9129
> URL: https://issues.apache.org/jira/browse/CASSANDRA-9129
> Project: Cassandra
>  Issue Type: Bug
>  Components: Observability
> Environment: Ubuntu 12.04.5 LTS
> AWS (m3.xlarge)
> 15G RAM
> 4 core Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
> Cassandra 2.0.14
>Reporter: Russ Lavoie
>Assignee: Sam Tunnicliffe
> Fix For: 2.0.17, 2.1.9
>
> Attachments: 9129-2.0.txt
>
>
> Upgrading from Cassandra 2.0.11 or 2.0.12 to 2.0.14 I am seeing a pending 
> hinted hand off that never clears.  New hinted hand offs that go into pending 
> waiting for a node to come up clear as expected.  But 1 always remains.
> I through the following steps.
> 1) stop cassandra
> 2) Upgrade cassandra to 2.0.14
> 3) Start cassandra
> 4) nodetool tpstats
> There are no errors in the logs, to help with this issue.  I ran a few 
> nodetool commands to get some data and pasted them below:
> Below is what is shown after running nodetool status on each node in the ring
> {code}Status=Up/Down
> |/ State=Normal/Leaving/Joining/Moving
> --  Address   Load   Tokens  Owns   Host ID   Rack
> UN279.8 MB   256 34.9% rack1
> UN279.79 MB  256 33.0% rack1
> UN279.87 MB  256 32.1% rack1
> {code}
> Below is what is shown after running nodetool tpstats on each node in the 
> ring showing a single HintedHandoff in pending status that never clears
> {code}
> Pool NameActive   Pending  Completed   Blocked  All 
> time blocked
> ReadStage 0 0  14550 0
>  0
> RequestResponseStage  0 0 113040 0
>  0
> MutationStage 0 0 168873 0
>  0
> ReadRepairStage   0 0   1147 0
>  0
> ReplicateOnWriteStage 0 0  0 0
>  0
> GossipStage   0 0 232112 0
>  0
> CacheCleanupExecutor  0 0  0 0
>  0
> MigrationStage0 0  0 0
>  0
> MemoryMeter   0 0  6 0
>  0
> FlushWriter   0 0 38 0
>  0
> ValidationExecutor0 0  0 0
>  0
> InternalResponseStage 0 0  0 0
>  0
> AntiEntropyStage  0 0  0 0
>  0
> MemtablePostFlusher   0 0   1333 0
>  0
> MiscStage 0 0  0 0
>  0
> PendingRangeCalculator0 0  6 0
>  0
> CompactionExecutor0 0178 0
>  0
> commitlog_archiver0 0  0 0
>  0
> HintedHandoff 0 1133 0
>  0
> Message type   Dropped
> RANGE_SLICE  0
> READ_REPAIR  0
> PAGED_RANGE  0
> BINARY   0
> READ 0
> MUTATION 0
> _TRACE   0
> REQUEST_RESPONSE 0
> COUNTER_MUTATION 0
> {code}
> Below is what is shown after running nodetool cfstats system.hints on all 3 
> nodes.
> {code}
> Keyspace: system
>   Read Count: 0
>   Read Latency: NaN ms.
>   Write Count: 0
>   Write Latency: NaN ms.
>   Pending Tasks: 0
>   Table: hints
>   SSTable count: 0
>   Space used (live), bytes: 0
>   Space used (total), bytes: 0
>   Off heap memory used (total), bytes: 0
>   SSTable Compression Ratio: 0.0
>   Number of keys (estimate): 0
>   Memtable cell count: 0
>   Memtable data size, bytes: 0
>   Memtable switch count: 0
>   Local read count: 0
>   Local read latency: 0.000 ms
>   Local write count: 0
>   Local write latency: 0.000 ms
>  

[jira] [Updated] (CASSANDRA-9129) HintedHandoff in pending state forever after upgrading to 2.0.14 from 2.0.11 and 2.0.12

2015-08-07 Thread Sam Tunnicliffe (JIRA)

 [ 
https://issues.apache.org/jira/browse/CASSANDRA-9129?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Sam Tunnicliffe updated CASSANDRA-9129:
---
Fix Version/s: 2.1.9

 HintedHandoff in pending state forever after upgrading to 2.0.14 from 2.0.11 
 and 2.0.12
 ---

 Key: CASSANDRA-9129
 URL: https://issues.apache.org/jira/browse/CASSANDRA-9129
 Project: Cassandra
  Issue Type: Bug
 Environment: Ubuntu 12.04.5 LTS
 AWS (m3.xlarge)
 15G RAM
 4 core Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
 Cassandra 2.0.14
Reporter: Russ Lavoie
Assignee: Sam Tunnicliffe
 Fix For: 2.1.9, 2.0.17

 Attachments: 9129-2.0.txt


 Upgrading from Cassandra 2.0.11 or 2.0.12 to 2.0.14 I am seeing a pending 
 hinted hand off that never clears.  New hinted hand offs that go into pending 
 waiting for a node to come up clear as expected.  But 1 always remains.
 I through the following steps.
 1) stop cassandra
 2) Upgrade cassandra to 2.0.14
 3) Start cassandra
 4) nodetool tpstats
 There are no errors in the logs, to help with this issue.  I ran a few 
 nodetool commands to get some data and pasted them below:
 Below is what is shown after running nodetool status on each node in the ring
 {code}Status=Up/Down
 |/ State=Normal/Leaving/Joining/Moving
 --  Address   Load   Tokens  Owns   Host ID   Rack
 UN  NODE1  279.8 MB   256 34.9%  HOSTID   rack1
 UN  NODE2  279.79 MB  256 33.0%  HOSTID   rack1
 UN  NODE3  279.87 MB  256 32.1%  HOSTID   rack1
 {code}
 Below is what is shown after running nodetool tpstats on each node in the 
 ring showing a single HintedHandoff in pending status that never clears
 {code}
 Pool NameActive   Pending  Completed   Blocked  All 
 time blocked
 ReadStage 0 0  14550 0
  0
 RequestResponseStage  0 0 113040 0
  0
 MutationStage 0 0 168873 0
  0
 ReadRepairStage   0 0   1147 0
  0
 ReplicateOnWriteStage 0 0  0 0
  0
 GossipStage   0 0 232112 0
  0
 CacheCleanupExecutor  0 0  0 0
  0
 MigrationStage0 0  0 0
  0
 MemoryMeter   0 0  6 0
  0
 FlushWriter   0 0 38 0
  0
 ValidationExecutor0 0  0 0
  0
 InternalResponseStage 0 0  0 0
  0
 AntiEntropyStage  0 0  0 0
  0
 MemtablePostFlusher   0 0   1333 0
  0
 MiscStage 0 0  0 0
  0
 PendingRangeCalculator0 0  6 0
  0
 CompactionExecutor0 0178 0
  0
 commitlog_archiver0 0  0 0
  0
 HintedHandoff 0 1133 0
  0
 Message type   Dropped
 RANGE_SLICE  0
 READ_REPAIR  0
 PAGED_RANGE  0
 BINARY   0
 READ 0
 MUTATION 0
 _TRACE   0
 REQUEST_RESPONSE 0
 COUNTER_MUTATION 0
 {code}
 Below is what is shown after running nodetool cfstats system.hints on all 3 
 nodes.
 {code}
 Keyspace: system
   Read Count: 0
   Read Latency: NaN ms.
   Write Count: 0
   Write Latency: NaN ms.
   Pending Tasks: 0
   Table: hints
   SSTable count: 0
   Space used (live), bytes: 0
   Space used (total), bytes: 0
   Off heap memory used (total), bytes: 0
   SSTable Compression Ratio: 0.0
   Number of keys (estimate): 0
   Memtable cell count: 0
   Memtable data size, bytes: 0
   Memtable switch count: 0
   Local read count: 0
   Local read latency: 0.000 ms
   Local write count: 0
   Local write latency: 0.000 ms
   Pending tasks: 0
   Bloom filter false positives: 0
   Bloom filter false ratio: 0.0

[jira] [Updated] (CASSANDRA-9129) HintedHandoff in pending state forever after upgrading to 2.0.14 from 2.0.11 and 2.0.12

2015-08-04 Thread Jonathan Ellis (JIRA)

 [ 
https://issues.apache.org/jira/browse/CASSANDRA-9129?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Jonathan Ellis updated CASSANDRA-9129:
--
Reviewer: Aleksey Yeschenko

 HintedHandoff in pending state forever after upgrading to 2.0.14 from 2.0.11 
 and 2.0.12
 ---

 Key: CASSANDRA-9129
 URL: https://issues.apache.org/jira/browse/CASSANDRA-9129
 Project: Cassandra
  Issue Type: Bug
 Environment: Ubuntu 12.04.5 LTS
 AWS (m3.xlarge)
 15G RAM
 4 core Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
 Cassandra 2.0.14
Reporter: Russ Lavoie
Assignee: Sam Tunnicliffe
 Fix For: 2.0.x

 Attachments: 9129-2.0.txt


 Upgrading from Cassandra 2.0.11 or 2.0.12 to 2.0.14 I am seeing a pending 
 hinted hand off that never clears.  New hinted hand offs that go into pending 
 waiting for a node to come up clear as expected.  But 1 always remains.
 I through the following steps.
 1) stop cassandra
 2) Upgrade cassandra to 2.0.14
 3) Start cassandra
 4) nodetool tpstats
 There are no errors in the logs, to help with this issue.  I ran a few 
 nodetool commands to get some data and pasted them below:
 Below is what is shown after running nodetool status on each node in the ring
 {code}Status=Up/Down
 |/ State=Normal/Leaving/Joining/Moving
 --  Address   Load   Tokens  Owns   Host ID   Rack
 UN  NODE1  279.8 MB   256 34.9%  HOSTID   rack1
 UN  NODE2  279.79 MB  256 33.0%  HOSTID   rack1
 UN  NODE3  279.87 MB  256 32.1%  HOSTID   rack1
 {code}
 Below is what is shown after running nodetool tpstats on each node in the 
 ring showing a single HintedHandoff in pending status that never clears
 {code}
 Pool NameActive   Pending  Completed   Blocked  All 
 time blocked
 ReadStage 0 0  14550 0
  0
 RequestResponseStage  0 0 113040 0
  0
 MutationStage 0 0 168873 0
  0
 ReadRepairStage   0 0   1147 0
  0
 ReplicateOnWriteStage 0 0  0 0
  0
 GossipStage   0 0 232112 0
  0
 CacheCleanupExecutor  0 0  0 0
  0
 MigrationStage0 0  0 0
  0
 MemoryMeter   0 0  6 0
  0
 FlushWriter   0 0 38 0
  0
 ValidationExecutor0 0  0 0
  0
 InternalResponseStage 0 0  0 0
  0
 AntiEntropyStage  0 0  0 0
  0
 MemtablePostFlusher   0 0   1333 0
  0
 MiscStage 0 0  0 0
  0
 PendingRangeCalculator0 0  6 0
  0
 CompactionExecutor0 0178 0
  0
 commitlog_archiver0 0  0 0
  0
 HintedHandoff 0 1133 0
  0
 Message type   Dropped
 RANGE_SLICE  0
 READ_REPAIR  0
 PAGED_RANGE  0
 BINARY   0
 READ 0
 MUTATION 0
 _TRACE   0
 REQUEST_RESPONSE 0
 COUNTER_MUTATION 0
 {code}
 Below is what is shown after running nodetool cfstats system.hints on all 3 
 nodes.
 {code}
 Keyspace: system
   Read Count: 0
   Read Latency: NaN ms.
   Write Count: 0
   Write Latency: NaN ms.
   Pending Tasks: 0
   Table: hints
   SSTable count: 0
   Space used (live), bytes: 0
   Space used (total), bytes: 0
   Off heap memory used (total), bytes: 0
   SSTable Compression Ratio: 0.0
   Number of keys (estimate): 0
   Memtable cell count: 0
   Memtable data size, bytes: 0
   Memtable switch count: 0
   Local read count: 0
   Local read latency: 0.000 ms
   Local write count: 0
   Local write latency: 0.000 ms
   Pending tasks: 0
   Bloom filter false positives: 0
   Bloom filter false ratio: 0.0
   

[jira] [Updated] (CASSANDRA-9129) HintedHandoff in pending state forever after upgrading to 2.0.14 from 2.0.11 and 2.0.12

2015-08-04 Thread Sam Tunnicliffe (JIRA)

 [ 
https://issues.apache.org/jira/browse/CASSANDRA-9129?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Sam Tunnicliffe updated CASSANDRA-9129:
---
Attachment: 9129-2.0.txt


The attached patch adds a second ScheduledExecutor to HintedHandoffManager. 
This reverts back to something more like pre-8285 behaviour where only the 
actual hint delivery tasks are run on the executor exposed through JMX  
tpstats. 
The periodic scheduling task, plus deletions from  truncations of the hints 
table are run on this new executor, so the stats will go back to just reporting 
the number of hints delivered/pending etc. 
 

Cassci: 
[testall|http://cassci.datastax.com/view/Dev/view/beobal/job/beobal-9219-testall/]
  
[dtests|http://cassci.datastax.com/view/Dev/view/beobal/job/beobal-9219-dtest/]

 HintedHandoff in pending state forever after upgrading to 2.0.14 from 2.0.11 
 and 2.0.12
 ---

 Key: CASSANDRA-9129
 URL: https://issues.apache.org/jira/browse/CASSANDRA-9129
 Project: Cassandra
  Issue Type: Bug
 Environment: Ubuntu 12.04.5 LTS
 AWS (m3.xlarge)
 15G RAM
 4 core Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
 Cassandra 2.0.14
Reporter: Russ Lavoie
Assignee: Sam Tunnicliffe
 Fix For: 2.0.x

 Attachments: 9129-2.0.txt


 Upgrading from Cassandra 2.0.11 or 2.0.12 to 2.0.14 I am seeing a pending 
 hinted hand off that never clears.  New hinted hand offs that go into pending 
 waiting for a node to come up clear as expected.  But 1 always remains.
 I through the following steps.
 1) stop cassandra
 2) Upgrade cassandra to 2.0.14
 3) Start cassandra
 4) nodetool tpstats
 There are no errors in the logs, to help with this issue.  I ran a few 
 nodetool commands to get some data and pasted them below:
 Below is what is shown after running nodetool status on each node in the ring
 {code}Status=Up/Down
 |/ State=Normal/Leaving/Joining/Moving
 --  Address   Load   Tokens  Owns   Host ID   Rack
 UN  NODE1  279.8 MB   256 34.9%  HOSTID   rack1
 UN  NODE2  279.79 MB  256 33.0%  HOSTID   rack1
 UN  NODE3  279.87 MB  256 32.1%  HOSTID   rack1
 {code}
 Below is what is shown after running nodetool tpstats on each node in the 
 ring showing a single HintedHandoff in pending status that never clears
 {code}
 Pool NameActive   Pending  Completed   Blocked  All 
 time blocked
 ReadStage 0 0  14550 0
  0
 RequestResponseStage  0 0 113040 0
  0
 MutationStage 0 0 168873 0
  0
 ReadRepairStage   0 0   1147 0
  0
 ReplicateOnWriteStage 0 0  0 0
  0
 GossipStage   0 0 232112 0
  0
 CacheCleanupExecutor  0 0  0 0
  0
 MigrationStage0 0  0 0
  0
 MemoryMeter   0 0  6 0
  0
 FlushWriter   0 0 38 0
  0
 ValidationExecutor0 0  0 0
  0
 InternalResponseStage 0 0  0 0
  0
 AntiEntropyStage  0 0  0 0
  0
 MemtablePostFlusher   0 0   1333 0
  0
 MiscStage 0 0  0 0
  0
 PendingRangeCalculator0 0  6 0
  0
 CompactionExecutor0 0178 0
  0
 commitlog_archiver0 0  0 0
  0
 HintedHandoff 0 1133 0
  0
 Message type   Dropped
 RANGE_SLICE  0
 READ_REPAIR  0
 PAGED_RANGE  0
 BINARY   0
 READ 0
 MUTATION 0
 _TRACE   0
 REQUEST_RESPONSE 0
 COUNTER_MUTATION 0
 {code}
 Below is what is shown after running nodetool cfstats system.hints on all 3 
 nodes.
 {code}
 Keyspace: system
   Read Count: 0
   Read Latency: NaN ms.
   Write Count: 0
   Write Latency: NaN ms.
   Pending Tasks: 0
   Table: hints
   SSTable count: 0
   Space used 

[jira] [Updated] (CASSANDRA-9129) HintedHandoff in pending state forever after upgrading to 2.0.14 from 2.0.11 and 2.0.12

2015-04-07 Thread Philip Thompson (JIRA)

 [ 
https://issues.apache.org/jira/browse/CASSANDRA-9129?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Philip Thompson updated CASSANDRA-9129:
---
Assignee: Aleksey Yeschenko

 HintedHandoff in pending state forever after upgrading to 2.0.14 from 2.0.11 
 and 2.0.12
 ---

 Key: CASSANDRA-9129
 URL: https://issues.apache.org/jira/browse/CASSANDRA-9129
 Project: Cassandra
  Issue Type: Bug
 Environment: Ubuntu 12.04.5 LTS
 AWS (m3.xlarge)
 15G RAM
 4 core Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
 Cassandra 2.0.14
Reporter: Russ Lavoie
Assignee: Aleksey Yeschenko
 Fix For: 2.0.15


 Upgrading from Cassandra 2.0.11 or 2.0.12 to 2.0.14 I am seeing a pending 
 hinted hand off that never clears.  New hinted hand offs that go into pending 
 waiting for a node to come up clear as expected.  But 1 always remains.
 I through the following steps.
 1) stop cassandra
 2) Upgrade cassandra to 2.0.14
 3) Start cassandra
 4) nodetool tpstats
 There are no errors in the logs, to help with this issue.  I ran a few 
 nodetool commands to get some data and pasted them below:
 Below is what is shown after running nodetool status on each node in the ring
 {code}Status=Up/Down
 |/ State=Normal/Leaving/Joining/Moving
 --  Address   Load   Tokens  Owns   Host ID   Rack
 UN  NODE1  279.8 MB   256 34.9%  HOSTID   rack1
 UN  NODE2  279.79 MB  256 33.0%  HOSTID   rack1
 UN  NODE3  279.87 MB  256 32.1%  HOSTID   rack1
 {code}
 Below is what is shown after running nodetool tpstats on each node in the 
 ring showing a single HintedHandoff in pending status that never clears
 {code}
 Pool NameActive   Pending  Completed   Blocked  All 
 time blocked
 ReadStage 0 0  14550 0
  0
 RequestResponseStage  0 0 113040 0
  0
 MutationStage 0 0 168873 0
  0
 ReadRepairStage   0 0   1147 0
  0
 ReplicateOnWriteStage 0 0  0 0
  0
 GossipStage   0 0 232112 0
  0
 CacheCleanupExecutor  0 0  0 0
  0
 MigrationStage0 0  0 0
  0
 MemoryMeter   0 0  6 0
  0
 FlushWriter   0 0 38 0
  0
 ValidationExecutor0 0  0 0
  0
 InternalResponseStage 0 0  0 0
  0
 AntiEntropyStage  0 0  0 0
  0
 MemtablePostFlusher   0 0   1333 0
  0
 MiscStage 0 0  0 0
  0
 PendingRangeCalculator0 0  6 0
  0
 CompactionExecutor0 0178 0
  0
 commitlog_archiver0 0  0 0
  0
 HintedHandoff 0 1133 0
  0
 Message type   Dropped
 RANGE_SLICE  0
 READ_REPAIR  0
 PAGED_RANGE  0
 BINARY   0
 READ 0
 MUTATION 0
 _TRACE   0
 REQUEST_RESPONSE 0
 COUNTER_MUTATION 0
 {code}
 Below is what is shown after running nodetool cfstats system.hints on all 3 
 nodes.
 {code}
 Keyspace: system
   Read Count: 0
   Read Latency: NaN ms.
   Write Count: 0
   Write Latency: NaN ms.
   Pending Tasks: 0
   Table: hints
   SSTable count: 0
   Space used (live), bytes: 0
   Space used (total), bytes: 0
   Off heap memory used (total), bytes: 0
   SSTable Compression Ratio: 0.0
   Number of keys (estimate): 0
   Memtable cell count: 0
   Memtable data size, bytes: 0
   Memtable switch count: 0
   Local read count: 0
   Local read latency: 0.000 ms
   Local write count: 0
   Local write latency: 0.000 ms
   Pending tasks: 0
   Bloom filter false positives: 0
   Bloom filter false ratio: 0.0
   Bloom filter space 

[jira] [Updated] (CASSANDRA-9129) HintedHandoff in pending state forever after upgrading to 2.0.14 from 2.0.11 and 2.0.12

2015-04-07 Thread Philip Thompson (JIRA)

 [ 
https://issues.apache.org/jira/browse/CASSANDRA-9129?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Philip Thompson updated CASSANDRA-9129:
---
Fix Version/s: (was: 2.0.14)
   2.0.15

 HintedHandoff in pending state forever after upgrading to 2.0.14 from 2.0.11 
 and 2.0.12
 ---

 Key: CASSANDRA-9129
 URL: https://issues.apache.org/jira/browse/CASSANDRA-9129
 Project: Cassandra
  Issue Type: Bug
 Environment: Ubuntu 12.04.5 LTS
 AWS (m3.xlarge)
 15G RAM
 4 core Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
 Cassandra 2.0.14
Reporter: Russ Lavoie
 Fix For: 2.0.15


 Upgrading from Cassandra 2.0.11 or 2.0.12 to 2.0.14 I am seeing a pending 
 hinted hand off that never clears.  New hinted hand offs that go into pending 
 waiting for a node to come up clear as expected.  But 1 always remains.
 I through the following steps.
 1) stop cassandra
 2) Upgrade cassandra to 2.0.14
 3) Start cassandra
 4) nodetool tpstats
 There are no errors in the logs, to help with this issue.  I ran a few 
 nodetool commands to get some data and pasted them below:
 Below is what is shown after running nodetool status on each node in the ring
 {code}Status=Up/Down
 |/ State=Normal/Leaving/Joining/Moving
 --  Address   Load   Tokens  Owns   Host ID   Rack
 UN  NODE1  279.8 MB   256 34.9%  HOSTID   rack1
 UN  NODE2  279.79 MB  256 33.0%  HOSTID   rack1
 UN  NODE3  279.87 MB  256 32.1%  HOSTID   rack1
 {code}
 Below is what is shown after running nodetool tpstats on each node in the 
 ring showing a single HintedHandoff in pending status that never clears
 {code}
 Pool NameActive   Pending  Completed   Blocked  All 
 time blocked
 ReadStage 0 0  14550 0
  0
 RequestResponseStage  0 0 113040 0
  0
 MutationStage 0 0 168873 0
  0
 ReadRepairStage   0 0   1147 0
  0
 ReplicateOnWriteStage 0 0  0 0
  0
 GossipStage   0 0 232112 0
  0
 CacheCleanupExecutor  0 0  0 0
  0
 MigrationStage0 0  0 0
  0
 MemoryMeter   0 0  6 0
  0
 FlushWriter   0 0 38 0
  0
 ValidationExecutor0 0  0 0
  0
 InternalResponseStage 0 0  0 0
  0
 AntiEntropyStage  0 0  0 0
  0
 MemtablePostFlusher   0 0   1333 0
  0
 MiscStage 0 0  0 0
  0
 PendingRangeCalculator0 0  6 0
  0
 CompactionExecutor0 0178 0
  0
 commitlog_archiver0 0  0 0
  0
 HintedHandoff 0 1133 0
  0
 Message type   Dropped
 RANGE_SLICE  0
 READ_REPAIR  0
 PAGED_RANGE  0
 BINARY   0
 READ 0
 MUTATION 0
 _TRACE   0
 REQUEST_RESPONSE 0
 COUNTER_MUTATION 0
 {code}
 Below is what is shown after running nodetool cfstats system.hints on all 3 
 nodes.
 {code}
 Keyspace: system
   Read Count: 0
   Read Latency: NaN ms.
   Write Count: 0
   Write Latency: NaN ms.
   Pending Tasks: 0
   Table: hints
   SSTable count: 0
   Space used (live), bytes: 0
   Space used (total), bytes: 0
   Off heap memory used (total), bytes: 0
   SSTable Compression Ratio: 0.0
   Number of keys (estimate): 0
   Memtable cell count: 0
   Memtable data size, bytes: 0
   Memtable switch count: 0
   Local read count: 0
   Local read latency: 0.000 ms
   Local write count: 0
   Local write latency: 0.000 ms
   Pending tasks: 0
   Bloom filter false positives: 0
   Bloom filter false ratio: 0.0
   Bloom filter space used,