adisunw opened a new issue, #23303:
URL: https://github.com/apache/beam/issues/23303

   ### What happened?
   
   I'm using the Snowflake IO Write and I'm noticing that the fileNameTemplate 
attribute is not actually being used anywhere.
   
   To give more context, I'm using AWS for the external stage here and I have a 
streaming pipeline that reads from Kafka. Say my external stage bucket is 
s3://test-bucket:
   
   Within `s3://test-bucket` i'm seeing CSV's written out like
   UUID1.csv.gz, UUID2.csv.gz, etc.
   
   However I wanted to create a file name template so that I could partition 
these files differently within s3://test-bucket. Ideally these files would have 
a date prefix to them so that they could be stored at 
`s3://test-bucket/year=YYYY/month=MM/day=DD/`
   
   This line of code 
https://github.com/apache/beam/blob/master/sdks/java/io/snowflake/src/main/java/org/apache/beam/sdk/io/snowflake/SnowflakeIO.java#L1090
 hard codes the file name prefix while files are being written to the external 
stage.
   
   The fileNameTemplate attribute 
(https://github.com/apache/beam/blob/master/sdks/java/io/snowflake/src/main/java/org/apache/beam/sdk/io/snowflake/SnowflakeIO.java#L245)
 sounded promising at first but it doesn't look like this attribute is being 
used.
   
   ```java
   SnowflakeIO.<Map<String, String>>write()
                   .withStagingBucketName(options.getStagingBucketName())
                   
.withStorageIntegrationName(options.getStorageIntegrationName())
                   .withDataSourceConfiguration(dataSourceConfiguration)
                   .withUserDataMapper(getStreamingCsvMapper())
                   .withSnowPipe(options.getSnowPipe())
                   .withFileNameTemplate("FOO") // -->  this doesn't do 
anything?
                   .withFlushTimeLimit(Duration.millis(60000 * 10))
                   .withDebugMode(StreamingLogLevel.INFO)
                   .withFlushRowLimit(1000000)
                   .withShardsNumber(1)
                   .to("output_table"));
   ```
   
   
   ### Issue Priority
   
   Priority: 2
   
   ### Issue Component
   
   Component: io-java-snowflake


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