[MINOR] Avoid unnecessary storage interactions for heartbeat

[TheR1sing3un]

Check if the current heartbeat has expired before update it.

Change Logs

1. avoid unnecessary storage interactions for heartbeat
   Describe context and summary for this change. Highlight if any code was copied.

Impact

Describe any public API or user-facing feature change or any performance impact.
none

Risk level (write none, low medium or high below)

none
If medium or high, explain what verification was done to mitigate the risks.

Documentation Update

none
Describe any necessary documentation update if there is any new feature, config, or user-facing change. If not, put "none".

• The config description must be updated if new configs are added or the default value of the configs are changed
• Any new feature or user-facing change requires updating the Hudi website. Please create a Jira ticket, attach the
  ticket number here and follow the instruction to make
  changes to the website.

Contributor's checklist

• Read through contributor's guide
• Change Logs and Impact were stated clearly
• Adequate tests were added if applicable
• CI passed

[hudi-bot]

CI report:

• d332b9f Azure: SUCCESS

Bot commands

@hudi-bot supports the following commands:

• @hudi-bot run azure re-run the last Azure build

[danny0405]

we should always trigger the heartbeat no matter whether it is expired or not.

[TheR1sing3un]

we should always trigger the heartbeat no matter whether it is expired or not.

What is the purpose of this?

[TheR1sing3un]

we should always trigger the heartbeat no matter whether it is expired or not.

Is it because it prevents other write-operation from cleaning the task while executing clean even though the write-operation is still running？

[danny0405]

we should always trigger the heartbeat no matter whether it is expired or not.

Is it because it prevents other write-operation from cleaning the task while executing clean even though the write-operation is still running？

The writer should not be aware of the reader. We should always report the heartbeat if the writer works correctly.