Task Execution Report

Generates a report of task/chunk execution statistics from a shard_map result.

Usage

task_report(result = NULL)

Arguments

result

A shard_result object from shard_map.

Value

An S3 object of class shard_report with type "task" containing:

• type: "task"

• timestamp: When the report was generated

• shards_total: Total number of shards

• shards_processed: Number of shards successfully processed

• shards_failed: Number of permanently failed shards

• chunks_dispatched: Number of chunk batches dispatched

• total_retries: Total number of retry attempts

• duration: Total execution duration (seconds)

• throughput: Shards processed per second

• queue_status: Final queue status

Examples

# \donttest{
res <- shard_map(shards(100, workers = 2), function(s) sum(s$idx), workers = 2)
pool_stop()
task_report(res)
#> shard task report
#> Generated: 2026-03-30 20:48:06 
#> 
#> Execution:
#>   Total shards: 8 
#>   Processed: 8 
#>   Failed: 0 
#>   Chunks dispatched: 8 
#> 
#> Timing:
#>   Duration: 2.27 seconds 
#>   Throughput: 3.5 shards/sec 
# }