Reading a seq file mult times in same job

[deep]

Hi All

1.Is it safe to read from the same SEQUENTIAL file multiple times in the same job.
2.Can diffrent jobs read from the same SEQUENTIAL file at the same time.
3.Is it safe to read from the same HASH file multiple times in the same job.
4.Can diffrent jobs read from the same HASH file at the same time.

Thanks

[kcbland]

YES
YES
YES
YES

Writing is a whole other topic. But, keep in mind that hash reads have the ability to be LOCKED reads, so avoid that and you're completely safe and performance won't suffer.