shunping opened a new pull request, #39445:
URL: https://github.com/apache/beam/pull/39445

   This PR fixes a bug where annotating `GoogleCloudStorageReadOptions` with 
`@JsonIgnore` caused custom GCS read options (such as `fadvise`) to be dropped 
during JSON serialization, forcing remote workers to fall back to default 
settings.
   
   Going forward, users can configure `GoogleCloudStorageReadOptions` so that 
they successfully take effect on workers using a code snippet like the 
following:
   
   ```java
           // Configure GCS Read Options with SEQUENTIAL fadvise
           GoogleCloudStorageReadOptions gcsReadOpt = 
GoogleCloudStorageReadOptions.DEFAULT.toBuilder()
                   .setFadvise(GoogleCloudStorageReadOptions.Fadvise.SEQUENTIAL)
                   .build();
           
options.as(GcsOptions.class).setGoogleCloudStorageReadOptions(gcsReadOpt);
   ```


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