[
https://issues.apache.org/jira/browse/HIVE-11033?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Allan Yan updated HIVE-11033:
-----------------------------
Description:
There is a bug in the org.apache.hadoop.hive.ql.io.orc.ReaderImpl class which
caused the bloom filter index saved in the ORC file not being used. The root
cause is the bloomFilterIndices variable defined in the SargApplier class
superseded the one defined in its parent class. Therefore, in the
ReaderImpl.pickRowGroups()
{code}
protected boolean[] pickRowGroups() throws IOException {
// if we don't have a sarg or indexes, we read everything
if (sargApp == null) {
return null;
}
readRowIndex(currentStripe, included, sargApp.sargColumns);
return sargApp.pickRowGroups(stripes.get(currentStripe), indexes);
}
{code}
The bloomFilterIndices populated by readRowIndex() is not picked up by sargApp
object. One solution is to simply pass it to the sargApp.pickRowGroups()
{noformat}
18:46 $ diff src/java/org/apache/hadoop/hive/ql/io/orc/RecordReaderImpl.java
src/java/org/apache/hadoop/hive/ql/io/orc/RecordReaderImpl.java.original
174d173
< bloomFilterIndices = new OrcProto.BloomFilterIndex[types.size()];
178c177
< sarg, options.getColumnNames(), strideRate, types, included.length,
bloomFilterIndices);
---
> sarg, options.getColumnNames(), strideRate, types, included.length);
204a204
> bloomFilterIndices = new OrcProto.BloomFilterIndex[types.size()];
673c673
< List<OrcProto.Type> types, int includedCount,
OrcProto.BloomFilterIndex[] bloomFilterIndices) {
---
> List<OrcProto.Type> types, int includedCount) {
677c677
< this.bloomFilterIndices = bloomFilterIndices;
---
> bloomFilterIndices = new OrcProto.BloomFilterIndex[types.size()];
{noformat}
was:
There is a bug in the org.apache.hadoop.hive.ql.io.orc.ReaderImpl class which
caused the bloom filter index saved in the ORC file not being used. The reason
is because the bloomFilterIndices variable defined in the SargApplier class
superseded from its parent class.
Here is one way to fix it
{noformat}
18:46 $ diff src/java/org/apache/hadoop/hive/ql/io/orc/RecordReaderImpl.java
src/java/org/apache/hadoop/hive/ql/io/orc/RecordReaderImpl.java.original
174d173
< bloomFilterIndices = new OrcProto.BloomFilterIndex[types.size()];
178c177
< sarg, options.getColumnNames(), strideRate, types, included.length,
bloomFilterIndices);
---
> sarg, options.getColumnNames(), strideRate, types, included.length);
204a204
> bloomFilterIndices = new OrcProto.BloomFilterIndex[types.size()];
673c673
< List<OrcProto.Type> types, int includedCount,
OrcProto.BloomFilterIndex[] bloomFilterIndices) {
---
> List<OrcProto.Type> types, int includedCount) {
677c677
< this.bloomFilterIndices = bloomFilterIndices;
---
> bloomFilterIndices = new OrcProto.BloomFilterIndex[types.size()];
{noformat}
> BloomFilter index is not honored by ORC reader
> ----------------------------------------------
>
> Key: HIVE-11033
> URL: https://issues.apache.org/jira/browse/HIVE-11033
> Project: Hive
> Issue Type: Bug
> Affects Versions: 1.2.0
> Reporter: Allan Yan
>
> There is a bug in the org.apache.hadoop.hive.ql.io.orc.ReaderImpl class which
> caused the bloom filter index saved in the ORC file not being used. The root
> cause is the bloomFilterIndices variable defined in the SargApplier class
> superseded the one defined in its parent class. Therefore, in the
> ReaderImpl.pickRowGroups()
> {code}
> protected boolean[] pickRowGroups() throws IOException {
> // if we don't have a sarg or indexes, we read everything
> if (sargApp == null) {
> return null;
> }
> readRowIndex(currentStripe, included, sargApp.sargColumns);
> return sargApp.pickRowGroups(stripes.get(currentStripe), indexes);
> }
> {code}
> The bloomFilterIndices populated by readRowIndex() is not picked up by
> sargApp object. One solution is to simply pass it to the
> sargApp.pickRowGroups()
> {noformat}
> 18:46 $ diff src/java/org/apache/hadoop/hive/ql/io/orc/RecordReaderImpl.java
> src/java/org/apache/hadoop/hive/ql/io/orc/RecordReaderImpl.java.original
> 174d173
> < bloomFilterIndices = new OrcProto.BloomFilterIndex[types.size()];
> 178c177
> < sarg, options.getColumnNames(), strideRate, types,
> included.length, bloomFilterIndices);
> ---
> > sarg, options.getColumnNames(), strideRate, types,
> > included.length);
> 204a204
> > bloomFilterIndices = new OrcProto.BloomFilterIndex[types.size()];
> 673c673
> < List<OrcProto.Type> types, int includedCount,
> OrcProto.BloomFilterIndex[] bloomFilterIndices) {
> ---
> > List<OrcProto.Type> types, int includedCount) {
> 677c677
> < this.bloomFilterIndices = bloomFilterIndices;
> ---
> > bloomFilterIndices = new OrcProto.BloomFilterIndex[types.size()];
> {noformat}
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