[
https://issues.apache.org/jira/browse/CASSANDRA-15772?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Mark Curtis updated CASSANDRA-15772:
------------------------------------
Description:
h2. Background
The docs for {{nodetool tpstats}} gives the user a good overview of the correct
command format, but lack an explanation of the message types.
As of Cassandra4.0 and CASSANDRA-15066 the Message types have expanded a lot so
this becomes quite overwhelming (particularly for new users).
I'd propose we offer a simple explanation of these grouping them into logical
groups (see CASSANDRA-15771 which I opened for the formatting output).
The github code for the {{Verb.java}} class does give the user some idea of
what these are but not everyone will go looking for that.
h2. Example
Code for ref
[https://github.com/apache/cassandra/blob/trunk/src/java/org/apache/cassandra/net/Verb.java]
I tried to sort some of the tpstats output into categories and made a first
attempt at an explanation here:
{code:java}
Batches BATCH_REMOVE_REQ
Batches BATCH_REMOVE_RSP
Batches BATCH_STORE_REQ
Batches BATCH_STORE_RSP
- These are batches, I'd assume the store / removes are as we add and process
them?
Counters COUNTER_MUTATION_REQ
Counters COUNTER_MUTATION_RSP
- Counter writes
Deprecated INTERNAL_RSP
Deprecated REQUEST_RSP
- Some of these are shown as deprecated in the code. Not sure what we should
add here
Gossip ECHO_REQ
Gossip ECHO_RSP
Gossip GOSSIP_DIGEST_ACK
Gossip GOSSIP_DIGEST_ACK2
Gossip GOSSIP_DIGEST_SYN
Gossip GOSSIP_SHUTDOWN
Gossip PING_REQ
Gossip PING_RSP
- Gossip, probably we'd refer to a more detailed page on gossip from here
Hints HINT_REQ
Hints HINT_RSP
- Hints!
LWTs PAXOS_COMMIT_REQ
LWTs PAXOS_COMMIT_RSP
LWTs PAXOS_PREPARE_REQ
LWTs PAXOS_PREPARE_RSP
LWTs PAXOS_PROPOSE_REQ
LWTs PAXOS_PROPOSE_RSP
- Paxos phases request / response
Migration SCHEMA_PULL_REQ
Migration SCHEMA_PULL_RSP
Migration SCHEMA_PUSH_REQ
Migration SCHEMA_PUSH_RSP
Migration SCHEMA_VERSION_REQ
Migration SCHEMA_VERSION_RSP
- Schema migration messaging (i.e. adding new tables)
Misc REPLICATION_DONE_REQ
Misc REPLICATION_DONE_RSP
Misc SNAPSHOT_MSG
Misc SNAPSHOT_REQ
Misc SNAPSHOT_RSP
- Unsure of these, could the snapshots be for simply nodetool snapshot requests
like on truncates?
Reads RANGE_REQ
Reads RANGE_RSP
Reads READ_REPAIR_REQ
Reads READ_REPAIR_RSP
Reads READ_REQ
Reads READ_RSP
- All types of read messages
Repair CLEANUP_MSG
Repair FAILED_SESSION_MSG
Repair FAILURE_RSP
Repair FINALIZE_COMMIT_MSG
Repair FINALIZE_PROMISE_MSG
Repair FINALIZE_PROPOSE_MSG
Repair PREPARE_CONSISTENT_REQ
Repair PREPARE_CONSISTENT_RSP
Repair PREPARE_MSG
Repair REPAIR_RSP
Repair STATUS_REQ
Repair STATUS_RSP
Repair SYNC_REQ
Repair SYNC_RSP
Repair VALIDATION_REQ
Repair VALIDATION_RSP
Repair ASYMMETRIC_SYNC_REQ
- Repairs, and phases, I think we'd need a bit more explanation here.
Validation, Sync etc ok. But unsure on these other types
Writes MUTATION_REQ
Writes MUTATION_RSP
Writes TRUNCATE_REQ
Writes TRUNCATE_RSP
- All types of write messages{code}
was:
h2. Background
The docs for {{nodetool tpstats}} gives the user a good overview of the correct
command format, but lack an explanation of the message types.
As of Cassandra4.0 and CASSANDRA-15066 the Message types have expanded a lot so
this becomes quite overwhelming (particularly for new users).
I'd propose we offer a simple explanation of these grouping them into logical
groups (see CASSANDRA-15771 which I opened for the formatting output).
The github code for the {{Verb.java}} class does give the user some idea of
what these are but not everyone will go looking for that.
Example
[https://github.com/apache/cassandra/blob/trunk/src/java/org/apache/cassandra/net/Verb.java]
> DOC - Improve tpstats documentation
> -----------------------------------
>
> Key: CASSANDRA-15772
> URL: https://issues.apache.org/jira/browse/CASSANDRA-15772
> Project: Cassandra
> Issue Type: Improvement
> Components: Documentation/Website
> Reporter: Mark Curtis
> Priority: Normal
> Fix For: 4.0-alpha
>
>
> h2. Background
> The docs for {{nodetool tpstats}} gives the user a good overview of the
> correct command format, but lack an explanation of the message types.
> As of Cassandra4.0 and CASSANDRA-15066 the Message types have expanded a lot
> so this becomes quite overwhelming (particularly for new users).
> I'd propose we offer a simple explanation of these grouping them into logical
> groups (see CASSANDRA-15771 which I opened for the formatting output).
> The github code for the {{Verb.java}} class does give the user some idea of
> what these are but not everyone will go looking for that.
> h2. Example
> Code for ref
> [https://github.com/apache/cassandra/blob/trunk/src/java/org/apache/cassandra/net/Verb.java]
> I tried to sort some of the tpstats output into categories and made a first
> attempt at an explanation here:
> {code:java}
> Batches BATCH_REMOVE_REQ
> Batches BATCH_REMOVE_RSP
> Batches BATCH_STORE_REQ
> Batches BATCH_STORE_RSP
> - These are batches, I'd assume the store / removes are as we add and process
> them?
>
> Counters COUNTER_MUTATION_REQ
> Counters COUNTER_MUTATION_RSP
> - Counter writes
> Deprecated INTERNAL_RSP
> Deprecated REQUEST_RSP
> - Some of these are shown as deprecated in the code. Not sure what we should
> add here
>
> Gossip ECHO_REQ
> Gossip ECHO_RSP
> Gossip GOSSIP_DIGEST_ACK
> Gossip GOSSIP_DIGEST_ACK2
> Gossip GOSSIP_DIGEST_SYN
> Gossip GOSSIP_SHUTDOWN
> Gossip PING_REQ
> Gossip PING_RSP
> - Gossip, probably we'd refer to a more detailed page on gossip from here
>
> Hints HINT_REQ
> Hints HINT_RSP
> - Hints!
>
> LWTs PAXOS_COMMIT_REQ
> LWTs PAXOS_COMMIT_RSP
> LWTs PAXOS_PREPARE_REQ
> LWTs PAXOS_PREPARE_RSP
> LWTs PAXOS_PROPOSE_REQ
> LWTs PAXOS_PROPOSE_RSP
> - Paxos phases request / response
>
> Migration SCHEMA_PULL_REQ
> Migration SCHEMA_PULL_RSP
> Migration SCHEMA_PUSH_REQ
> Migration SCHEMA_PUSH_RSP
> Migration SCHEMA_VERSION_REQ
> Migration SCHEMA_VERSION_RSP
> - Schema migration messaging (i.e. adding new tables)
> Misc REPLICATION_DONE_REQ
> Misc REPLICATION_DONE_RSP
> Misc SNAPSHOT_MSG
> Misc SNAPSHOT_REQ
> Misc SNAPSHOT_RSP
> - Unsure of these, could the snapshots be for simply nodetool snapshot
> requests like on truncates?
>
> Reads RANGE_REQ
> Reads RANGE_RSP
> Reads READ_REPAIR_REQ
> Reads READ_REPAIR_RSP
> Reads READ_REQ
> Reads READ_RSP
> - All types of read messages
>
> Repair CLEANUP_MSG
> Repair FAILED_SESSION_MSG
> Repair FAILURE_RSP
> Repair FINALIZE_COMMIT_MSG
> Repair FINALIZE_PROMISE_MSG
> Repair FINALIZE_PROPOSE_MSG
> Repair PREPARE_CONSISTENT_REQ
> Repair PREPARE_CONSISTENT_RSP
> Repair PREPARE_MSG
> Repair REPAIR_RSP
> Repair STATUS_REQ
> Repair STATUS_RSP
> Repair SYNC_REQ
> Repair SYNC_RSP
> Repair VALIDATION_REQ
> Repair VALIDATION_RSP
> Repair ASYMMETRIC_SYNC_REQ
> - Repairs, and phases, I think we'd need a bit more explanation here.
> Validation, Sync etc ok. But unsure on these other types
>
> Writes MUTATION_REQ
> Writes MUTATION_RSP
> Writes TRUNCATE_REQ
> Writes TRUNCATE_RSP
> - All types of write messages{code}
>
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
