Github user erikdw commented on the issue: https://github.com/apache/storm/pull/2109 @revans2 : agree that we should be careful in making changes away from the base "google_checks.xml", and I did already [argue above](https://github.com/apache/storm/pull/2109#discussion_r116677826) that we should be using `taskId` for the variable (that was implied when I said we should rename that *really* badly named `taskId()` method to `taskPrefix()`). So that should unblock Srishty for now. But let me make a few points: * The "standard" we are using here is just the *Google* standard, it's not some industry-wide thing that everyone strictly follows. I'm not sure whether we should be trying to follow it strictly, or just using it as a jumping off point for our own standard. * I'm pretty sure most would agree that `ignoreFinal` *should* be `false` (unlike the google default), because otherwise your constants won't be be allowed to be named `FOO_BAR`, they'd be named `Foo_Bar` or `FooBar`, neither of which stand out as being a constant. So that's at least one more deviation I strongly believe we should be making. And I'm sure there are more, the Google "standard" seems to be a bit wacky IMHO. * If your statement about "documentation" and "HBase" (I'm not familiar with that issue) is about how we're obscuring what we've changed from the Google defaults, I do have sympathy for that view. But that's because it's also going to be harder to upgrade our version of checkstyle later, since we'll need our changes to be applied to a newer google_checks.xml file. Though I will note that it's quite easy to craft a command to show the changes we've made so far: ``` % diff <(curl -s https://raw.githubusercontent.com/checkstyle/checkstyle/checkstyle-7.7/src/main/resources/google_checks.xml) <(curl -s https://raw.githubusercontent.com/apache/storm/master/storm-buildtools/storm_checkstyle.xml) 1a2,19 > > <!-- > Licensed to the Apache Software Foundation (ASF) under one or more > contributor license agreements. See the NOTICE file distributed with > this work for additional information regarding copyright ownership. > The ASF licenses this file to You under the Apache License, Version 2.0 > (the "License"); you may not use this file except in compliance with > the License. You may obtain a copy of the License at > > http://www.apache.org/licenses/LICENSE-2.0 > > Unless required by applicable law or agreed to in writing, software > distributed under the License is distributed on an "AS IS" BASIS, > WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. > See the License for the specific language governing permissions and > limitations under the License. > --> > 6a25,36 > The original file came from here: > https://raw.githubusercontent.com/checkstyle/checkstyle/checkstyle-7.7/src/main/resources/google_checks.xml > It has been slightly modified for use in Apache Storm, as follows: > * 4 space indents instead of 2 > * line-length limit is 140 instead of 100 > Once checkstyle has the ability to override selected configuration elements from within the Maven > pom.xml file, then we can remove this file in favor of overriding the provided google_checks.xml file. > See this issue to track that functionality: > https://github.com/checkstyle/checkstyle/issues/2873 > --> > > <!-- 43c73 < <property name="max" value="100"/> --- > <property name="max" value="140"/> 55c85 < <property name="maxLineLength" value="100"/> --- > <property name="maxLineLength" value="140"/> 158c188 < <property name="basicOffset" value="2"/> --- > <property name="basicOffset" value="4"/> 160c190 < <property name="caseIndent" value="2"/> --- > <property name="caseIndent" value="4"/> 163c193 < <property name="arrayInitIndent" value="2"/> --- > <property name="arrayInitIndent" value="4"/> ```
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