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https://reviews.apache.org/r/69174/
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Review request for hive and Ashutosh Chauhan.
Bugs: HIVE-20807
https://issues.apache.org/jira/browse/HIVE-20807
Repository: hive-git
Description
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LlapStatusServiceDriver is the class used to determine if LLAP has started. The
following problems should be solved by refactoring:
1. The main class is more than 800 lines long,should be cut into multiple
smaller classes.
2. The current design makes it extremely hard to write unit tests.
3. There are some overcomplicated, over-engineered parts of the code.
4. Most of the code is under org.apache.hadoop.hive.llap.cli, but some parts
are under org.apache.hadoop.hive.llap.cli.status. The whole program could be
moved to the latter.
5. LlapStatusHelpers serves as a class for holding classes, which doesn't make
much sense.
This is the first step of refactoring the program, now all of it components are
moved under the package org.apache.hadoop.hive.llap.cli.status, all the classes
and enums are put into a separate file, the overcomplicated parts of the
command line parsing are replaced with a more simple structure, and the
findbugs and checkstyle warnings are fixed.
Diffs
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bin/ext/llapstatus.sh 2d2c8f4
llap-server/src/java/org/apache/hadoop/hive/llap/cli/LlapSliderUtils.java
af47b26
llap-server/src/java/org/apache/hadoop/hive/llap/cli/LlapStatusOptionsProcessor.java
dca0c7b
llap-server/src/java/org/apache/hadoop/hive/llap/cli/LlapStatusServiceDriver.java
a521799
llap-server/src/java/org/apache/hadoop/hive/llap/cli/status/AmInfo.java
PRE-CREATION
llap-server/src/java/org/apache/hadoop/hive/llap/cli/status/AppStatusBuilder.java
PRE-CREATION
llap-server/src/java/org/apache/hadoop/hive/llap/cli/status/ExitCode.java
PRE-CREATION
llap-server/src/java/org/apache/hadoop/hive/llap/cli/status/LlapInstance.java
PRE-CREATION
llap-server/src/java/org/apache/hadoop/hive/llap/cli/status/LlapStatusCliException.java
PRE-CREATION
llap-server/src/java/org/apache/hadoop/hive/llap/cli/status/LlapStatusHelpers.java
5c8aeb0
llap-server/src/java/org/apache/hadoop/hive/llap/cli/status/LlapStatusServiceCommandLine.java
PRE-CREATION
llap-server/src/java/org/apache/hadoop/hive/llap/cli/status/LlapStatusServiceDriver.java
PRE-CREATION
llap-server/src/java/org/apache/hadoop/hive/llap/cli/status/State.java
PRE-CREATION
llap-server/src/java/org/apache/hadoop/hive/llap/cli/status/package-info.java
PRE-CREATION
llap-server/src/test/org/apache/hadoop/hive/llap/cli/TestLlapStatusServiceDriver.java
54166d5
llap-server/src/test/org/apache/hadoop/hive/llap/cli/status/TestLlapStatusServiceCommandLine.java
PRE-CREATION
llap-server/src/test/org/apache/hadoop/hive/llap/cli/status/package-info.java
PRE-CREATION
Diff: https://reviews.apache.org/r/69174/diff/1/
Testing
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Tested on clusters that
Thanks,
Miklos Gergely
