abstractdog commented on code in PR #5859:
URL: https://github.com/apache/hive/pull/5859#discussion_r2158204496
##########
ql/pom.xml:
##########
@@ -1142,6 +1143,12 @@
<exclude>META-INF/licenses/slf4j*/**</exclude>
</excludes>
</filter>
+ <filter>
+
<artifact>org.apache.tez:tez-protobuf-history-plugin</artifact>
Review Comment:
@deniskuzZ : let me respond here the quesions above
> Why is the tez-protobuf-history-plugin needed in schematool to begin with?
What purpose does it serve?
schematool runs hive-ql codepath, so it can hit anything which is used
around the Driver, that's how query hooks came into the picture, see this trace
below:
```
at
org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer.getDatabase(BaseSemanticAnalyzer.java:1877)
at
org.apache.hadoop.hive.ql.ddl.database.use.SwitchDatabaseAnalyzer.analyzeInternal(SwitchDatabaseAnalyzer.java:45)
at
org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer.analyze(BaseSemanticAnalyzer.java:324)
at org.apache.hadoop.hive.ql.Compiler.analyze(Compiler.java:227)
at org.apache.hadoop.hive.ql.Compiler.compile(Compiler.java:108)
at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:203)
at org.apache.hadoop.hive.ql.Driver.compileInternal(Driver.java:659)
at org.apache.hadoop.hive.ql.Driver.compileAndRespond(Driver.java:604)
at org.apache.hadoop.hive.ql.Driver.compileAndRespond(Driver.java:598)
at
org.apache.hadoop.hive.ql.reexec.ReExecDriver.compileAndRespond(ReExecDriver.java:126)
at
org.apache.hive.service.cli.operation.SQLOperation.prepare(SQLOperation.java:210)
at
org.apache.hive.service.cli.operation.SQLOperation.runInternal(SQLOperation.java:274)
at
org.apache.hive.service.cli.operation.Operation.run(Operation.java:288)
at
org.apache.hive.service.cli.session.HiveSessionImpl.executeStatementInternal(HiveSessionImpl.java:574)
at
org.apache.hive.service.cli.session.HiveSessionImpl.executeStatementAsync(HiveSessionImpl.java:560)
at
org.apache.hive.service.cli.CLIService.executeStatementAsync(CLIService.java:315)
at
org.apache.hive.service.cli.thrift.ThriftCLIService.ExecuteStatement(ThriftCLIService.java:583)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at
org.apache.hive.jdbc.HiveConnection$SynchronizedHandler.invoke(HiveConnection.java:2168)
at com.sun.proxy.$Proxy47.ExecuteStatement(Unknown Source)
at
org.apache.hive.jdbc.HiveStatement.runAsyncOnServer(HiveStatement.java:374)
at org.apache.hive.jdbc.HiveStatement.execute(HiveStatement.java:316)
at
org.apache.hive.jdbc.HiveConnection.setSchema(HiveConnection.java:2084)
at
org.apache.hadoop.hive.metastore.tools.schematool.HiveSchemaHelper.getConnectionToMetastore(HiveSchemaHelper.java:90)
at
org.apache.hadoop.hive.metastore.tools.schematool.HiveSchemaHelper.getConnectionToMetastore(HiveSchemaHelper.java:103)
at
org.apache.hadoop.hive.metastore.CDHMetaStoreSchemaInfo.getMetaStoreSchemaVersion(CDHMetaStoreSchemaInfo.java:323)
at
org.apache.hadoop.hive.metastore.tools.schematool.SchemaToolTaskInitOrUpgrade.execute(SchemaToolTaskInitOrUpgrade.java:41)
at
org.apache.hadoop.hive.metastore.tools.schematool.MetastoreSchemaTool.run(MetastoreSchemaTool.java:486)
at
org.apache.hive.beeline.schematool.HiveSchemaTool.main(HiveSchemaTool.java:143)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.hadoop.util.RunJar.run(RunJar.java:321)
at org.apache.hadoop.util.RunJar.main(RunJar.java:237)
```
> in a root pom we define multiple exclusions for
tez-protobuf-history-plugin, can't we exclude all the transitive dependencies
like
let me check
> I noticed those classes were already part of hive-exec before
[HIVE-28028](https://issues.apache.org/jira/browse/HIVE-28028), which removed
them and replaced with the tez-protobuf-history-plugin. So, basically, this PR
doesn't add any extra classes.
before HIVE-28028 hive had these classes as sources copied, so it's a major
difference that now we shade the binaries (I didn't like that copied and
version controlled them independently, which is something we only do in crazy
situations when there is no time for waiting for a tez release or something)
> why do we need filter? that's the only package in that artifact
good catch, I haven't checked, I'm removing the include
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