Adar Dembo created KUDU-2524:
--------------------------------
Summary: scalafmt incompatible with jdk8 older than u25
Key: KUDU-2524
URL: https://issues.apache.org/jira/browse/KUDU-2524
Project: Kudu
Issue Type: Bug
Components: java
Affects Versions: 1.8.0
Reporter: Adar Dembo
We're seeing a fair number of Gradle build failures in scalafmt with the
following output:
{noformat}
1: Task failed with an exception.
-----------
* What went wrong:
Execution failed for task ':kudu-spark:scalafmt'.
> Uninitialized object exists on backward branch 209
Exception Details:
Location:
scala/collection/immutable/HashMap$HashTrieMap.split()Lscala/collection/immutable/Seq;
@249: goto
Reason:
Error exists in the bytecode
Bytecode:
0000000: 2ab6 005b 04a0 001e b200 b3b2 00b8 04bd
0000010: 0002 5903 2a53 c000 bab6 00be b600 c2c0
0000020: 00c4 b02a b600 31b8 003b 3c1b 04a4 015e
0000030: 1b05 6c3d 2a1b 056c 2ab6 0031 b700 c63e
0000040: 2ab6 0031 021d 787e 3604 2ab6 0031 0210
0000050: 201d 647c 7e36 05bb 0014 59b2 00b8 2ab6
0000060: 0033 c000 bab6 00ca b700 cd1c b600 d13a
0000070: 0619 06c6 001a 1906 b600 d5c0 0081 3a07
0000080: 1906 b600 d8c0 0081 3a08 a700 0dbb 00da
0000090: 5919 06b7 00dd bf19 073a 0919 083a 0abb
00000a0: 0002 5915 0419 09bb 0014 59b2 00b8 1909
00000b0: c000 bab6 00ca b700 cd03 b800 e33a 0e3a
00000c0: 0d03 190d b900 e701 0019 0e3a 1136 1036
00000d0: 0f15 0f15 109f 0027 150f 0460 1510 190d
00000e0: 150f b900 ea02 00c0 0005 3a17 1911 1917
00000f0: b800 ee3a 1136 1036 0fa7 ffd8 1911 b800
0000100: f2b7 0060 3a0b bb00 0259 1505 190a bb00
0000110: 1459 b200 b819 0ac0 00ba b600 cab7 00cd
0000120: 03b8 00e3 3a13 3a12 0319 12b9 00e7 0100
0000130: 1913 3a16 3615 3614 1514 1515 9f00 2715
0000140: 1404 6015 1519 1215 14b9 00ea 0200 c000
0000150: 053a 1819 1619 18b8 00f5 3a16 3615 3614
0000160: a7ff d819 16b8 00f2 b700 603a 0cb2 00fa
0000170: b200 b805 bd00 0259 0319 0b53 5904 190c
0000180: 53c0 00ba b600 beb6 00fd b02a b600 3303
0000190: 32b6 00ff b0
Stackmap Table:
same_frame(@35)
full_frame(@141,{Object[#2],Integer,Integer,Integer,Integer,Integer,Object[#109]},{})
append_frame(@151,Object[#129],Object[#129])
full_frame(@209,{Object[#2],Integer,Integer,Integer,Integer,Integer,Object[#109],Object[#129],Object[#129],Object[#129],Object[#129],Top,Top,Object[#20],Object[#55],Integer,Integer,Object[#107]},{Uninitialized[#159],Uninitialized[#159],Integer,Object[#129]})
full_frame(@252,{Object[#2],Integer,Integer,Integer,Integer,Integer,Object[#109],Object[#129],Object[#129],Object[#129],Object[#129],Top,Top,Object[#20],Object[#55],Integer,Integer,Object[#107]},{Uninitialized[#159],Uninitialized[#159],Integer,Object[#129]})
full_frame(@312,{Object[#2],Integer,Integer,Integer,Integer,Integer,Object[#109],Object[#129],Object[#129],Object[#129],Object[#129],Object[#2],Top,Object[#20],Object[#55],Integer,Integer,Object[#107],Object[#20],Object[#55],Integer,Integer,Object[#107]},{Uninitialized[#262],Uninitialized[#262],Integer,Object[#129]})
full_frame(@355,{Object[#2],Integer,Integer,Integer,Integer,Integer,Object[#109],Object[#129],Object[#129],Object[#129],Object[#129],Object[#2],Top,Object[#20],Object[#55],Integer,Integer,Object[#107],Object[#20],Object[#55],Integer,Integer,Object[#107]},{Uninitialized[#262],Uninitialized[#262],Integer,Object[#129]})
full_frame(@395,{Object[#2],Integer},{}){noformat}
This appears to be due to [this JDK
issue|https://stackoverflow.com/questions/24061672/verifyerror-uninitialized-object-exists-on-backward-branch-jvm-spec-4-10-2-4],
which was fixed in JDK 8u25.
And sure enough, here's the JDK version for failing builds:
{noformat}
-- Found Java: /opt/toolchain/sun-jdk-64bit-1.8.0.05/bin/java (found suitable
version "1.8.0.05", minimum required is "1.7")
{noformat}
And here it is for successful builds:
{noformat}
19:06:12 -- Found Java: /usr/lib/jvm/java-1.8.0-openjdk-amd64/bin/java (found
suitable version "1.8.0.111", minimum required is "1.7")
{noformat}
We either need to blacklist JDK8 versions older than u25, or we need to
condition the scalafmt step on the JDK version.
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