boneanxs commented on code in PR #7978:
URL: https://github.com/apache/hudi/pull/7978#discussion_r1109424306
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hudi-common/src/main/java/org/apache/hudi/io/storage/HoodieBaseParquetWriter.java:
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@@ -65,14 +63,18 @@ public HoodieBaseParquetWriter(Path file,
}
public boolean canWrite() {
- // TODO we can actually do evaluation more accurately:
- // if we cache last data size check, since we account for how many
records
- // were written we can accurately project avg record size, and
therefore
- // estimate how many more records we can write before cut off
- if (lastCachedDataSize == -1 || getWrittenRecordCount() %
WRITTEN_RECORDS_THRESHOLD_FOR_FILE_SIZE_CHECK == 0) {
- lastCachedDataSize = getDataSize();
+ if (getWrittenRecordCount() >= recordNumForNextCheck) {
+ long dataSize = getDataSize();
+ long avgRecordSize = dataSize / getWrittenRecordCount();
+ // Follow the parquet block size check logic here, return false
+ // if it is within ~2 records of the limit
+ if (dataSize > (maxFileSize - avgRecordSize * 2)) {
+ return false;
Review Comment:
Follow
this:https://github.com/apache/parquet-mr/blob/261f7d2679407c833545b56f4c85a4ae8b5c9ed4/parquet-hadoop/src/main/java/org/apache/parquet/hadoop/InternalParquetRecordWriter.java#L154
we better to recalculate the avgRecodSize every batch, since it could become
more and more accurate.
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