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Increase default maxConcurrencyTask to 10. #76

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Sep 14, 2023
Merged

Increase default maxConcurrencyTask to 10. #76

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2 changes: 1 addition & 1 deletion README.md
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Expand Up @@ -40,7 +40,7 @@ Changing these values might have an impact on performance.

- `spark.shuffle.s3.bufferSize`: Default buffer size when writing (default: `8388608`)
- `spark.shuffle.s3.maxBufferSizeTask`: Maximum size of the buffered output streams per task (default: `134217728`)
- `spark.shuffle.s3.maxConcurrencyTask`: Maximum per task concurrency. Computed by analysing the IO latencies (default: `25`).
- `spark.shuffle.s3.maxConcurrencyTask`: Maximum per task concurrency. Computed by analysing the IO latencies (default: `10`).
- `spark.shuffle.s3.cachePartitionLengths`: Cache partition lengths in memory (default: `true`)
- `spark.shuffle.s3.cacheChecksums`: Cache checksums in memory (default: `true`)
- `spark.shuffle.s3.cleanup`: Cleanup the shuffle files (default: `true`)
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2 changes: 1 addition & 1 deletion src/main/scala/org/apache/spark/shuffle/helper/S3ShuffleDispatcher.scala
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Expand Up @@ -50,7 +50,7 @@ class S3ShuffleDispatcher extends Logging {
// Optional
val bufferSize: Int = conf.getInt("spark.shuffle.s3.bufferSize", defaultValue = 8 * 1024 * 1024)
val maxBufferSizeTask: Int = conf.getInt("spark.shuffle.s3.maxBufferSizeTask", defaultValue = 128 * 1024 * 1024)
val maxConcurrencyTask: Int = conf.getInt("spark.shuffle.s3.maxConcurrencyTask", defaultValue = 5)
val maxConcurrencyTask: Int = conf.getInt("spark.shuffle.s3.maxConcurrencyTask", defaultValue = 10)
val cachePartitionLengths: Boolean = conf.getBoolean("spark.shuffle.s3.cachePartitionLengths", defaultValue = true)
val cacheChecksums: Boolean = conf.getBoolean("spark.shuffle.s3.cacheChecksums", defaultValue = true)
val cleanupShuffleFiles: Boolean = conf.getBoolean("spark.shuffle.s3.cleanup", defaultValue = true)
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