Yin Huai created AVRO-1208:
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Summary: Improve Trevni's performance on row-oriented data access
Key: AVRO-1208
URL: https://issues.apache.org/jira/browse/AVRO-1208
Project: Avro
Issue Type: Improvement
Affects Versions: 1.7.3
Reporter: Yin Huai
Trevni uses an 64KB internal buffer to store values of a column. When accessing
a column, it reads 64KB (if we do not consider compression and checksum) data
from the storage layer. However, when the table is accessed in a row-oriented
fashion (a entire row needs to be handed over to the upper layer), in the worst
case (a full table scan and values of this table are all the same size), every
64KB data read can cause a seek.
This jira is used to discuss if we should consider the data access pattern
mentioned above and if so, how to improve the performance of Trevni.
Row-oriented data processing engines, e.g. Hive, can benefit from this work.
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