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- Fix realtime queries by removing COLUMN_ID and COLUMN_NAME cache in inputformat (#814)

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- Hive on Spark will NOT work for RT tables after this patch
This commit is contained in:
n3nash
2019-08-02 16:06:34 -07:00
committed by vinoth chandar
parent 86b5fcdd33
commit 1a29d46a57
1 changed files with 1 additions and 15 deletions
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16
hoodie-hadoop-mr/src/main/java/com/uber/hoodie/hadoop/realtime/HoodieRealtimeInputFormat.java
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@@ -69,15 +69,10 @@ public class HoodieRealtimeInputFormat extends HoodieInputFormat implements Conf
public static final int HOODIE_COMMIT_TIME_COL_POS = 0;
public static final int HOODIE_RECORD_KEY_COL_POS = 2;
public static final int HOODIE_PARTITION_PATH_COL_POS = 3;
// Track the read column ids and names to be used throughout the execution and lifetime of this task
// Needed for Hive on Spark. Our theory is that due to
// Hive on Spark queries do not work with RT tables. Our theory is that due to
// {@link org.apache.hadoop.hive.ql.io.parquet.ProjectionPusher}
// not handling empty list correctly, the ParquetRecordReaderWrapper ends up adding the same column ids multiple
// times which ultimately breaks the query.
// TODO : Find why RO view works fine but RT doesn't, JIRA: https://issues.apache.org/jira/browse/HUDI-151
public static String READ_COLUMN_IDS;
public static String READ_COLUMN_NAMES;
public static boolean isReadColumnsSet = false;
@Override
public InputSplit[] getSplits(JobConf job, int numSplits) throws IOException {
@@ -208,11 +203,6 @@ public class HoodieRealtimeInputFormat extends HoodieInputFormat implements Conf
HOODIE_COMMIT_TIME_COL_POS);
configuration = addProjectionField(configuration, HoodieRecord.PARTITION_PATH_METADATA_FIELD,
HOODIE_PARTITION_PATH_COL_POS);
if (!isReadColumnsSet) {
READ_COLUMN_IDS = configuration.get(ColumnProjectionUtils.READ_COLUMN_IDS_CONF_STR);
READ_COLUMN_NAMES = configuration.get(ColumnProjectionUtils.READ_COLUMN_NAMES_CONF_STR);
isReadColumnsSet = true;
}
return configuration;
}
@@ -240,10 +230,6 @@ public class HoodieRealtimeInputFormat extends HoodieInputFormat implements Conf
"HoodieRealtimeRecordReader can only work on HoodieRealtimeFileSplit and not with "
+ split);
// Reset the original column ids and names
job.set(ColumnProjectionUtils.READ_COLUMN_IDS_CONF_STR, READ_COLUMN_IDS);
job.set(ColumnProjectionUtils.READ_COLUMN_NAMES_CONF_STR, READ_COLUMN_NAMES);
return new HoodieRealtimeRecordReader((HoodieRealtimeFileSplit) split, job,
super.getRecordReader(split, job, reporter));
}