d7b58f1461
## What changes were proposed in this pull request? Currently, for the key that can not fit within a long, we build a hash map for UnsafeHashedRelation, it's converted to BytesToBytesMap after serialization and deserialization. We should build a BytesToBytesMap directly to have better memory efficiency. In order to do that, BytesToBytesMap should support multiple (K,V) pair with the same K, Location.putNewKey() is renamed to Location.append(), which could append multiple values for the same key (same Location). `Location.newValue()` is added to find the next value for the same key. ## How was this patch tested? Existing tests. Added benchmark for broadcast hash join with duplicated keys. Author: Davies Liu <davies@databricks.com> Closes #11870 from davies/map2. |
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| .. | ||
| avro | ||
| gen-java/org/apache/spark/sql/execution/datasources/parquet/test/avro | ||
| java/test/org/apache/spark/sql | ||
| resources | ||
| scala/org/apache/spark/sql | ||
| scripts | ||
| thrift | ||
| README.md | ||
Notes for Parquet compatibility tests
The following directories and files are used for Parquet compatibility tests:
.
├── README.md # This file
├── avro
│ ├── *.avdl # Testing Avro IDL(s)
│ └── *.avpr # !! NO TOUCH !! Protocol files generated from Avro IDL(s)
├── gen-java # !! NO TOUCH !! Generated Java code
├── scripts
│ ├── gen-avro.sh # Script used to generate Java code for Avro
│ └── gen-thrift.sh # Script used to generate Java code for Thrift
└── thrift
└── *.thrift # Testing Thrift schema(s)
To avoid code generation during build time, Java code generated from testing Thrift schema and Avro IDL are also checked in.
When updating the testing Thrift schema and Avro IDL, please run gen-avro.sh and gen-thrift.sh accordingly to update generated Java code.
Prerequisites
Please ensure avro-tools and thrift are installed. You may install these two on Mac OS X via:
$ brew install thrift avro-tools