Hi,

Did you happen meet with some similar issues like below? It was caused because 
I used some annotations in the JMH benchmark test codes, and looks like 
duplicate classes were generated during different phases in mvn building.
I'm blocked. Thanks in advance.

[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 10.177s
[INFO] Finished at: Thu Jul 30 07:20:06 CST 2015
[INFO] Final Memory: 35M/340M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal 
org.apache.maven.plugins:maven-compiler-plugin:3.3:compile (default-compile) on 
project benchmark: Compilation failure: Compilation failure:
[ERROR] 
/C:/work/projects/kerby/benchmark/target/generated-sources/annotations/org/openjdk/jmh/infra/generated/Blackhole_jmh_B1.java:[3,8]
 duplicate class: org.openjdk.jmh.infra.ge
nerated.Blackhole_jmh_B1
[ERROR] 
/C:/work/projects/kerby/benchmark/target/generated-sources/annotations/org/openjdk/jmh/infra/generated/Blackhole_jmh_B2.java:[3,8]
 duplicate class: org.openjdk.jmh.infra.ge
nerated.Blackhole_jmh_B2
[ERROR] 
/C:/work/projects/kerby/benchmark/target/generated-sources/annotations/org/openjdk/jmh/infra/generated/Blackhole_jmh_B3.java:[2,8]
 duplicate class: org.openjdk.jmh.infra.ge
nerated.Blackhole_jmh_B3
[ERROR] 
/C:/work/projects/kerby/benchmark/target/generated-sources/annotations/org/openjdk/jmh/infra/generated/Blackhole_jmh.java:[2,8]
 duplicate class: org.openjdk.jmh.infra.gener
ated.Blackhole_jmh
[ERROR] 
/C:/work/projects/kerby/benchmark/target/generated-sources/annotations/org/apache/kerby/benchmark/generated/KrbCodecBenchmark_jmh_B1.java:[3,8]
 duplicate class: org.apache.
kerby.benchmark.generated.KrbCodecBenchmark_jmh_B1
[ERROR] 
/C:/work/projects/kerby/benchmark/target/generated-sources/annotations/org/apache/kerby/benchmark/generated/KrbCodecBenchmark_jmh_B2.java:[3,8]
 duplicate class: org.apache.
kerby.benchmark.generated.KrbCodecBenchmark_jmh_B2
[ERROR] 
/C:/work/projects/kerby/benchmark/target/generated-sources/annotations/org/apache/kerby/benchmark/generated/KrbCodecBenchmark_jmh_B3.java:[2,8]
 duplicate class: org.apache.
kerby.benchmark.generated.KrbCodecBenchmark_jmh_B3
[ERROR] 
/C:/work/projects/kerby/benchmark/target/generated-sources/annotations/org/apache/kerby/benchmark/generated/KrbCodecBenchmark_jmh.java:[2,8]
 duplicate class: org.apache.ker
by.benchmark.generated.KrbCodecBenchmark_jmh
[ERROR] 
/C:/work/projects/kerby/benchmark/target/generated-sources/annotations/org/apache/kerby/benchmark/generated/KrbCodecBenchmark_decodeWithApacheDS.java:[34,14]
 duplicate clas
s: org.apache.kerby.benchmark.generated.KrbCodecBenchmark_decodeWithApacheDS
[ERROR] 
/C:/work/projects/kerby/benchmark/target/generated-sources/annotations/org/apache/kerby/benchmark/generated/KrbCodecBenchmark_decodeWithKerby.java:[34,14]
 duplicate class:
org.apache.kerby.benchmark.generated.KrbCodecBenchmark_decodeWithKerby
[ERROR] 
/C:/work/projects/kerby/benchmark/target/generated-sources/annotations/org/apache/kerby/benchmark/generated/JsonBackendBenchmark_jmh_B1.java:[3,8]
 duplicate class: org.apac
he.kerby.benchmark.generated.JsonBackendBenchmark_jmh_B1
[ERROR] 
/C:/work/projects/kerby/benchmark/target/generated-sources/annotations/org/apache/kerby/benchmark/generated/JsonBackendBenchmark_jmh_B2.java:[3,8]
 duplicate class: org.apac
he.kerby.benchmark.generated.JsonBackendBenchmark_jmh_B2
[ERROR] 
/C:/work/projects/kerby/benchmark/target/generated-sources/annotations/org/apache/kerby/benchmark/generated/JsonBackendBenchmark_jmh_B3.java:[2,8]
 duplicate class: org.apac
he.kerby.benchmark.generated.JsonBackendBenchmark_jmh_B3
[ERROR] 
/C:/work/projects/kerby/benchmark/target/generated-sources/annotations/org/apache/kerby/benchmark/generated/JsonBackendBenchmark_jmh.java:[2,8]
 duplicate class: org.apache.
kerby.benchmark.generated.JsonBackendBenchmark_jmh
[ERROR] 
/C:/work/projects/kerby/benchmark/target/generated-sources/annotations/org/apache/kerby/benchmark/generated/JsonBackendBenchmark_queryTest.java:[34,14]
 duplicate class: org
.apache.kerby.benchmark.generated.JsonBackendBenchmark_queryTest
[ERROR] -> [Help 1]

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