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https://issues.apache.org/jira/browse/HUDI-1146?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17171596#comment-17171596
]
Brandon Scheller commented on HUDI-1146:
----------------------------------------
spark-submit
--class org.apache.hudi.utilities.deltastreamer.HoodieDeltaStreamer \
--master yarn --deploy-mode client \
--table-type COPY_ON_WRITE \
--continuous \
--enable-hive-sync \
--min-sync-interval-seconds 60 \
--source-class org.apache.hudi.utilities.sources.ParquetDFSSource \
--transformer-class org.apache.hudi.utilities.transform.AWSDmsTransformer \
--target-base-path s3://pathtotable/table/ \
--target-table hudi_table \
--payload-class org.apache.hudi.payload.AWSDmsAvroPayload \
--schemaprovider-class org.apache.hudi.utilities.schema.FilebasedSchemaProvider
\
--hoodie-conf hoodie.datasource.write.recordkey.field=“XXXX” \
--hoodie-conf
hoodie.datasource.write.keygenerator.class=org.apache.hudi.keygen.ComplexKeyGenerator
\
--hoodie-conf hoodie.datasource.write.partitionpath.field=“XXX” \
--hoodie-conf hoodie.datasource.hive_sync.database=xxxxx \
--hoodie-conf hoodie.datasource.hive_sync.table=xxxxxx \
--hoodie-conf hoodie.datasource.hive_sync.partition_fields=“XXXXX” \
--hoodie-conf
hoodie.datasource.hive_sync.partition_extractor_class=org.apache.hudi.hive.MultiPartKeysValueExtractor
\
--hoodie-conf hoodie.deltastreamer.source.dfs.root=s3://pathtoinput/xxx/
> DeltaStreamer fails to start when No updated records + schemaProvider not
> supplied
> ----------------------------------------------------------------------------------
>
> Key: HUDI-1146
> URL: https://issues.apache.org/jira/browse/HUDI-1146
> Project: Apache Hudi
> Issue Type: Bug
> Components: Hive Integration
> Reporter: Brandon Scheller
> Priority: Major
>
> DeltaStreamer issue — happens with both COW or MOR - Restarting the
> DeltaStreamer Process crashes, that is, 2nd Run does nothing.
> Steps:
> Run Hudi DeltaStreamer job in --continuous mode
> Run the same job again without deleting the output parquet files generated
> due to step above
> 2nd run crashes with the below error ( it does not crash if we delete the
> output parquet file)
> {{Caused by: org.apache.hudi.exception.HoodieException: Please provide a
> valid schema provider class!}}
> {{ at
> org.apache.hudi.utilities.sources.InputBatch.getSchemaProvider(InputBatch.java:53)}}
> {{ at
> org.apache.hudi.utilities.deltastreamer.DeltaSync.readFromSource(DeltaSync.java:312)}}
> {{ at
> org.apache.hudi.utilities.deltastreamer.DeltaSync.syncOnce(DeltaSync.java:226)}}
> {{ at
> org.apache.hudi.utilities.deltastreamer.HoodieDeltaStreamer$DeltaSyncService.lambda$startService$0(HoodieDeltaStreamer.java:392)}}
>
> {{This looks to be because of this line:}}
> {{[https://github.com/apache/hudi/blob/master/hudi-utilities/src/main/java/org/apache/hudi/utilities/deltastreamer/DeltaSync.java#L315]
> }}
> The "orElse" block here doesn't seem to make sense as if "transformed" is
> empty then it is likely "dataAndCheckpoint" will have a null schema provider
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