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java.util.concurrent.ExecutionException: java.io.IOException: Cannot run program "dot": error=2, No such file or directory
I am trying to run the stolon test and it can complete all the read and append transactions. But during analyzing period, one problem occurs. Here is the stack trace:
2020-07-08 16:02:33,588{GMT} INFO [jepsen test runner] jepsen.core: Run complete, writing
2020-07-08 16:02:34,670{GMT} INFO [jepsen test runner] jepsen.core: Analyzing...
2020-07-08 16:02:35,500{GMT} WARN [clojure-agent-send-off-pool-47] jepsen.checker: Error while checking history:
java.util.concurrent.ExecutionException: java.io.IOException: Cannot run program "dot": error=2, No such file or directory
at java.util.concurrent.FutureTask.report(FutureTask.java:122)
at java.util.concurrent.FutureTask.get(FutureTask.java:192)
at clojure.core$deref_future.invokeStatic(core.clj:2300)
at clojure.core$future_call$reify__8439.deref(core.clj:6974)
at clojure.core$deref.invokeStatic(core.clj:2320)
at clojure.core$deref.invoke(core.clj:2306)
at clojure.core$map$fn__5851.invoke(core.clj:2755)
at clojure.lang.LazySeq.sval(LazySeq.java:42)
at clojure.lang.LazySeq.seq(LazySeq.java:58)
at clojure.lang.RT.seq(RT.java:531)
at clojure.core$seq__5387.invokeStatic(core.clj:137)
at clojure.core$dorun.invokeStatic(core.clj:3133)
at clojure.core$dorun.invoke(core.clj:3133)
at elle.viz$plot_analysis_BANG_.invokeStatic(viz.clj:203)
at elle.viz$plot_analysis_BANG_.invoke(viz.clj:188)
at elle.txn$cycles_BANG_.invokeStatic(txn.clj:514)
at elle.txn$cycles_BANG_.invoke(txn.clj:495)
at elle.list_append$check.invokeStatic(list_append.clj:777)
at elle.list_append$check.invoke(list_append.clj:739)
at jepsen.tests.cycle.append$checker$reify__1759.check(append.clj:19)
at jepsen.checker$check_safe.invokeStatic(checker.clj:78)
at jepsen.checker$check_safe.invoke(checker.clj:71)
at jepsen.checker$compose$reify__8566$fn__8568.invoke(checker.clj:94)
at clojure.core$pmap$fn__8447$fn__8448.invoke(core.clj:7022)
at clojure.core$binding_conveyor_fn$fn__5739.invoke(core.clj:2030)
at clojure.lang.AFn.call(AFn.java:18)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.io.IOException: Cannot run program "dot": error=2, No such file or directory
at java.lang.ProcessBuilder.start(ProcessBuilder.java:1048)
at java.lang.Runtime.exec(Runtime.java:620)
at clojure.java.shell$sh.invokeStatic(shell.clj:113)
at clojure.java.shell$sh.doInvoke(shell.clj:79)
at clojure.lang.RestFn.invoke(RestFn.java:457)
at rhizome.viz$dot__GT_svg.invokeStatic(viz.clj:130)
at rhizome.viz$dot__GT_svg.invoke(viz.clj:126)
at elle.viz$save_dot_BANG_.invokeStatic(viz.clj:186)
at elle.viz$save_dot_BANG_.invoke(viz.clj:176)
at elle.viz$plot_analysis_BANG_$fn__1293.invoke(viz.clj:209)
... 7 common frames omitted
Caused by: java.io.IOException: error=2, No such file or directory
at java.lang.UNIXProcess.forkAndExec(Native Method)
at java.lang.UNIXProcess.<init>(UNIXProcess.java:247)
at java.lang.ProcessImpl.start(ProcessImpl.java:134)
at java.lang.ProcessBuilder.start(ProcessBuilder.java:1029)
... 16 common frames omitted
2020-07-08 16:02:35,507{GMT} INFO [jepsen test runner] jepsen.core: Analysis complete
OS of control node: Debian 9.
OS of db node: Debian 10.
gnuplot version: gnuplot 5.0 patchlevel 5.
Like the error message says, you don't have dot installed--you'll need graphviz for Jepsen to render the anomalies.
In your defense, the documentation for this is basically nonexistent! That's on me, sorry!
In your defense, the documentation for this is basically nonexistent! That's on me, sorry!
I have successfully reproduced the phenomenon of G2-item after several days' try. I am so excited! Thanks a lot for your help!
In your defense, the documentation for this is basically nonexistent! That's on me, sorry!
ah, I learnt the Jepsen from the etcd tutorial and it is based on the old version(may be before 0.18.0). It seems that Jepsen underwent a big refactoring/update after that. By the way, wish to see the updated tutorial for the redesigned Jepsen if possible.
Yeah, that would be great. I'm... still trying to summon up the wherewithal to write any kind of code this week; when I get a free 10 hours or so I'll go through the tutorial again.