use -source 7 or higher to enable diamond operator

[xpleaf]

I just follow the tutorial from：
http://opentsdb.net/docs/build/html/installation.html

and run the command:

git clone git://github.com/OpenTSDB/opentsdb.git
cd opentsdb
./build.sh

But the following error was reported：

..................
ignore some output
..................

warning: [options] bootstrap class path not set in conjunction with -source 1.6
../src/core/SplitRollupQuery.java:451: error: diamond operator is not supported in -source 1.6
            TreeSet<byte[]> allGroups = new TreeSet<>(Bytes.MEMCMP);
                                                    ^
  (use -source 7 or higher to enable diamond operator)
../src/core/SplitRollupSpanGroup.java:14: error: diamond operator is not supported in -source 1.6
    private final List<SpanGroup> spanGroups = new ArrayList<>();
                                                             ^
  (use -source 7 or higher to enable diamond operator)
2 errors
1 warning
make[1]: *** [.javac-stamp] Error 1
make[1]: Leaving directory `/home/hadoop/soft/opentsdb/build'
make: *** [all] Error 2

I noticed that the -source 6 parameter was used during the execution of the Java command：

File "TokenMgrError.java" is being rebuilt.
File "ParseException.java" is being rebuilt.
File "Token.java" is being rebuilt.
File "SimpleCharStream.java" is being rebuilt.
Parser generated with 0 errors and 1 warnings.
PWD: /home/hadoop/soft/opentsdb/build
/usr/local/jdk1.8.0_112/bin/javac -Xlint -source 6 -encoding utf-8

The question is, how do I get rid of the -source option?

[ghost]

I am having the same issue and to resolve I made a clean clone of the repository and modified the following:

diff --git a/Makefile.am b/Makefile.am
index 9bf563d3..7c378d85 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -513,7 +513,7 @@ package_dir := $(subst .,/,$(package))
 UNITTESTS := $(test_SRC:test/%.java=$(package_dir)/%.class)
 PLUGINTESTS := $(test_plugin_SRC:test/%.java=$(package_dir)/%.class)
 PLUGINSVCS := $(test_plugin_SVCS:%=-C $(srcdir)/test %)
-AM_JAVACFLAGS = -Xlint -source 6 -encoding utf-8
+AM_JAVACFLAGS = -Xlint -source 7 -encoding utf-8
 JVM_ARGS =
 classes := $(tsdb_SRC:src/%.java=$(package_dir)/%.class) \
         $(builddata_SRC:src/%.java=$(package_dir)/%.class)

But this leads to the next error:

Note: Some input files additionally use or override a deprecated API.
Note: ../test/stats/TestQueryStats.java uses unchecked or unsafe operations.
Note: Some messages have been simplified; recompile with -Xdiags:verbose to get full output
10 errors
100 warnings
make: *** [Makefile:2022: .javac-unittests-stamp] Error 1

For the moment I am unable to build a new version. Did you have more chances to build OpenTSDB?

[manolama]

I have a patch to fix the diamond operators. This release will likely require Java 1.7 as the Jackson dependencies are now 1.7 as well.

Question: Is anyone still running 1.6 or 1.7 JVMs or has everyone migrated to 1.8 or 9+?

[vhirk]

Hi, did anybody solve this problem?

[manolama]

The diamonds were fixed in d33befe but I'll also make the change to support 1.8