szehon-ho commented on code in PR #6451:
URL: https://github.com/apache/iceberg/pull/6451#discussion_r1063985982
##########
docs/configuration.md:
##########
@@ -160,14 +160,20 @@ Here are the catalog properties related to locking. They
are used by some catalo
The following properties from the Hadoop configuration are used by the Hive
Metastore connector.
-| Property | Default | Description
|
-| ------------------------------------- | ---------------- |
----------------------------------------------------------------------------------
|
-| iceberg.hive.client-pool-size | 5 | The size of the
Hive client pool when tracking tables in HMS |
-| iceberg.hive.lock-timeout-ms | 180000 (3 min) | Maximum time in
milliseconds to acquire a lock |
-| iceberg.hive.lock-check-min-wait-ms | 50 | Minimum time in
milliseconds to check back on the status of lock acquisition |
-| iceberg.hive.lock-check-max-wait-ms | 5000 | Maximum time in
milliseconds to check back on the status of lock acquisition |
-
-Note: `iceberg.hive.lock-check-max-wait-ms` should be less than the
[transaction
timeout](https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties#ConfigurationProperties-hive.txn.timeout)
+| Property | Default | Description
|
+|-------------------------------------------|-----------------|------------------------------------------------------------------------------|
+| iceberg.hive.client-pool-size | 5 | The size of
the Hive client pool when tracking tables in HMS |
+| iceberg.hive.lock-timeout-ms | 180000 (3 min) | Maximum time
in milliseconds to acquire a lock |
Review Comment:
I see, just saw its from another pr and unrelated to this one. But it still
doesnt fit very well with the two phases (creation/acquisition) you put in the
first part of the doc, should we just say simply:
The HMS table locking is a 2-step process:
1. Lock create: Create lock in HMS and queue for acquisition
2. Lock check: Check if lock successfully acquired
This way, they are more relevant to the property names (lock-create,
lock-check) Also wasnt sure about putting the details of 'should wait until
every previously created Lock is released', is this the Hive internals? As I
feel it will just confuse more.
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