Nota
Capaian ke halaman ini memerlukan kebenaran. Anda boleh cuba mendaftar masuk atau menukar direktori.
Capaian ke halaman ini memerlukan kebenaran. Anda boleh cuba menukar direktori.
Returns the length of the block being read, or -1 if not available.
Syntax
from pyspark.sql import functions as sf
sf.input_file_block_length()
Examples
Example 1: Get input file block length
from pyspark.sql import functions as sf
df = spark.read.text("python/test_support/sql/ages_newlines.csv", lineSep=",")
df.select(sf.input_file_block_length()).show()
+-------------------------+
|input_file_block_length()|
+-------------------------+
| 87|
| 87|
| 87|
| 87|
| 87|
| 87|
| 87|
| 87|
+-------------------------+