[HUDI-5577] Validate option catalog.path in dfs mode

[yuruguo]

Change Logs

It will throw IllegalArgumentException If catalog.path is empty in dfs mode, as below:

Caused by: java.lang.IllegalArgumentException: Can not create a Path from a null string
    at org.apache.hadoop.fs.Path.checkPathArg(Path.java:125)
    at org.apache.hadoop.fs.Path.<init>(Path.java:137)
    at org.apache.hudi.common.fs.FSUtils.getFs(FSUtils.java:102)
    at org.apache.hudi.table.catalog.HoodieCatalog.open(HoodieCatalog.java:103)
    at org.apache.flink.table.catalog.CatalogManager.registerCatalog(CatalogManager.java:195)
    at org.apache.flink.table.api.internal.TableEnvironmentImpl.createCatalog(TableEnvironmentImpl.java:1297)
    at org.apache.flink.table.api.internal.TableEnvironmentImpl.executeInternal(TableEnvironmentImpl.java:1122)
    at org.apache.flink.table.api.internal.TableEnvironmentImpl.executeSql(TableEnvironmentImpl.java:742)
    at com.jd.flink.sql.runtime.SQLExecHelper.execSQL(SQLExecHelper.java:326)
    at com.jd.flink.sql.NGMain.main(NGMain.java:41)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:356) 

Impact

none

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

none

Documentation Update

Describe any necessary documentation update if there is any new feature, config, or user-facing change

• 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:

• 99bd3ce Azure: FAILURE

Bot commands

@hudi-bot supports the following commands:

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

[danny0405]

+1, thanks for the fix.