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fix batch size default values in the tuning guide #2207

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Apr 21, 2021
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fix batch size default values in the tuning guide #2207

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6 changes: 3 additions & 3 deletions docs/tuning-guide.md
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Expand Up @@ -163,7 +163,7 @@ Default value: `0`
## Columnar Batch Size
Configuration key: [`spark.rapids.sql.batchSizeBytes`](configs.md#sql.batchSizeBytes)

Default value: `2147483648`
Default value: `2147483647`

The RAPIDS Accelerator plugin processes data on the GPU in a columnar format. Data is processed
in a series of columnar batches, and during processing sometimes multiple batches are concatenated
Expand All @@ -176,11 +176,11 @@ partitions have been read, try setting this to a lower value.
### File Reader Batch Size
Configuration key: [`spark.rapids.sql.reader.batchSizeRows`](configs.md#sql.reader.batchSizeRows)

Default value: `2147483648`
Default value: `2147483647`

Configuration key: [`spark.rapids.sql.reader.batchSizeBytes`](configs.md#sql.reader.batchSizeBytes)

Default value: `2147483648`
Default value: `2147483647`

When reading data from a file, this setting is used to control the maximum batch size separately
from the main [columnar batch size](#columnar-batch-size) setting. Some transcoding jobs (e.g.:
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