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Document timescaledb.bgw_scheduler_restart_time (#2748) #2772

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Document timescaledb.bgw_scheduler_restart_time (#2748)
mkindahl Oct 23, 2023
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7 changes: 7 additions & 0 deletions self-hosted/configuration/configuration.md
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Expand Up @@ -195,6 +195,13 @@ Max background worker processes allocated to TimescaleDB. Set to at
least 1 + number of databases in Postgres instance to use background
workers. Default value is 8.

### `timescaledb.bgw_scheduler_restart_time (int)`

Scheduler restart time in seconds. If the scheduler encounters an
error, it exits with an error code and restarts after
`timescaledb.bgw_scheduler_restart_time` seconds. Default value is 30
seconds. You can set this to a value between 1 and 3600 seconds.

### Distributed hypertables

#### `timescaledb.hypertable_distributed_default (enum)`
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11 changes: 9 additions & 2 deletions self-hosted/configuration/timescaledb-config.md
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Expand Up @@ -21,6 +21,14 @@ Max background worker processes allocated to TimescaleDB. Set to at least 1 +
the number of databases loaded with a TimescaleDB extension in a PostgreSQL
instance. Default value is 16.


### `timescaledb.bgw_scheduler_restart_time (int)`

Scheduler restart time in seconds. If the scheduler encounters an
error, it exits with an error code and restarts after
`timescaledb.bgw_scheduler_restart_time` seconds. Default value is 30
seconds. You can set this to a value between 1 and 3600 seconds.

## Query Planning and Execution

### `timescaledb.enable_chunkwise_aggregation (bool)`
Expand All @@ -30,7 +38,6 @@ Then, these partial results are combined and finalized. Splitting aggregations
decreases the size of the created hash tables and increases data locality, which
speeds up queries.


### `timescaledb.vectorized_aggregation (bool)`
Enables or disables the vectorized optimizations in the query executor. For
example, the `sum()` aggregation function on compressed chunks can be optimized
Expand All @@ -44,7 +51,7 @@ Enables two-phase commit for distributed hypertables. If disabled, it
uses a one-phase commit instead, which is faster but can result in
inconsistent data. It is by default enabled.

### `timescaledb.enable_per_data_node_queries`
### `timescaledb.enable_per_data_node_queries (bool)`

If enabled, TimescaleDB combines different chunks belonging to the
same hypertable into a single query per data node. It is by default enabled.
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