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https://issues.apache.org/jira/browse/MAPREDUCE-7252?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17010854#comment-17010854
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Jonathan Turner Eagles commented on MAPREDUCE-7252:
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[~ahussein], could you provide a specific patch for branch-2.10? Getting this
error
{noformat}
[ERROR] Failed to execute goal
org.apache.maven.plugins:maven-compiler-plugin:3.1:testCompile
(default-testCompile) on project hadoop-mapreduce-client-app: Compilation
failure
[ERROR]
/Users/jeagles/hadoop/hadoop/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/test/java/org/apache/hadoop/mapreduce/v2/app/MRApp.java:[397,61]
method references are not supported in -source 1.7
[ERROR] (use -source 8 or higher to enable method references)
{noformat}
Which corresponds to this code.
{code}
String statesValues = targetStates.stream().map(Object::toString).collect(
Collectors.joining(","));
{code}
> Handling 0 progress in SimpleExponential task runtime estimator
> ---------------------------------------------------------------
>
> Key: MAPREDUCE-7252
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-7252
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Reporter: Ahmed Hussein
> Assignee: Ahmed Hussein
> Priority: Minor
> Fix For: 3.3.0, 3.1.4, 3.2.2
>
> Attachments: MAPREDUCE-7252.001.patch, MAPREDUCE-7252.002.patch,
> MAPREDUCE-7252.003.patch
>
>
> The simple exponential runtime estimator (added in MAPREDUCE-7208) seems not
> to handle the corner cases where the delta progress is 0. As a result, the
> forecast will be NaN or Inf which messes up the subsequent forecast values.
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