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NullPointerException from analyze-profile --vfs_stats #726

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schroederc opened this issue Dec 18, 2015 · 1 comment
Closed

NullPointerException from analyze-profile --vfs_stats #726

schroederc opened this issue Dec 18, 2015 · 1 comment
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@kchodorow
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P2 We'll consider working on this in future. (Assignee optional) type: bug

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@schroederc
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$ bazel analyze-profile --vfs_stats /tmp/bazel.prof

...
java.lang.NullPointerException
        at com.google.devtools.build.lib.profiler.output.PhaseText.printVfsStatistics(PhaseText.java:206)
        at com.google.devtools.build.lib.profiler.output.PhaseText.printPhaseStatistics(PhaseText.java:111)
        at com.google.devtools.build.lib.profiler.output.PhaseText.print(PhaseText.java:67)
        at com.google.devtools.build.lib.runtime.commands.ProfileCommand.exec(ProfileCommand.java:283)
        at com.google.devtools.build.lib.runtime.BlazeCommandDispatcher.exec(BlazeCommandDispatcher.java:371)
        at com.google.devtools.build.lib.runtime.BlazeRuntime$3.exec(BlazeRuntime.java:1016)
        at com.google.devtools.build.lib.server.RPCService.executeRequest(RPCService.java:65)
        at com.google.devtools.build.lib.server.RPCServer.executeRequest(RPCServer.java:434)
        at com.google.devtools.build.lib.server.RPCServer.serve(RPCServer.java:229)
        at com.google.devtools.build.lib.runtime.BlazeRuntime.serverMain(BlazeRuntime.java:975)
        at com.google.devtools.build.lib.runtime.BlazeRuntime.main(BlazeRuntime.java:772)
        at com.google.devtools.build.lib.bazel.BazelMain.main(BazelMain.java:55)

$ bazel analyze-profile --html --html_details --vfs_stats /tmp/bazel.prof

...
java.lang.NullPointerException
        at com.google.devtools.build.lib.profiler.output.PhaseHtml.printVfsStatistics(PhaseHtml.java:227)
        at com.google.devtools.build.lib.profiler.output.PhaseHtml.printPhaseStatistics(PhaseHtml.java:132)
        at com.google.devtools.build.lib.profiler.output.PhaseHtml.print(PhaseHtml.java:115)
        at com.google.devtools.build.lib.profiler.output.HtmlCreator.print(HtmlCreator.java:77)
        at com.google.devtools.build.lib.profiler.output.HtmlCreator.create(HtmlCreator.java:195)
        at com.google.devtools.build.lib.runtime.commands.ProfileCommand.exec(ProfileCommand.java:263)
        at com.google.devtools.build.lib.runtime.BlazeCommandDispatcher.exec(BlazeCommandDispatcher.java:371)
        at com.google.devtools.build.lib.runtime.BlazeRuntime$3.exec(BlazeRuntime.java:1016)
        at com.google.devtools.build.lib.server.RPCService.executeRequest(RPCService.java:65)
        at com.google.devtools.build.lib.server.RPCServer.executeRequest(RPCServer.java:434)
        at com.google.devtools.build.lib.server.RPCServer.serve(RPCServer.java:229)
        at com.google.devtools.build.lib.runtime.BlazeRuntime.serverMain(BlazeRuntime.java:975)
        at com.google.devtools.build.lib.runtime.BlazeRuntime.main(BlazeRuntime.java:772)
        at com.google.devtools.build.lib.bazel.BazelMain.main(BazelMain.java:55)
@dslomov dslomov added type: bug P2 We'll consider working on this in future. (Assignee optional) labels Dec 21, 2015
@dslomov dslomov assigned philwo and kchodorow and unassigned philwo Dec 21, 2015
@ulfjack
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ulfjack commented Feb 3, 2016

I've seen the same issue in our internal binary. I think it's a serious issue because it makes the profiling unusable.

luca-digrazia pushed a commit to luca-digrazia/DatasetCommitsDiffSearch that referenced this issue Sep 5, 2022
Fix NPE in vfs profile output
b40abde 
    Also removed some unused code while I was here.

    Fixes bazelbuild/bazel#726.

    --
    MOS_MIGRATED_REVID=113758464
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@kchodorow @philwo @dslomov @ulfjack @schroederc