ExprRewriter enter infinite loop for nested Case expressions

select 
  case
    case ''
      when 'abc' then t4.string_col
    end
    when 'none' then 'Total'
  end
as fcol from functional.alltypes as t4 limit 1;

"Thread-16" #39 prio=5 os_prio=0 tid=0x000000000e188000 nid=0x90ec8 runnable [0x00007fa8b3d23000]
   java.lang.Thread.State: RUNNABLE
    at org.apache.impala.service.FeSupport.NativeEvalExprsWithoutRow(Native Method)
    at org.apache.impala.service.FeSupport.EvalExprsWithoutRowBounded(FeSupport.java:261)
    at org.apache.impala.service.FeSupport.EvalExprWithoutRowBounded(FeSupport.java:205)
    at org.apache.impala.analysis.LiteralExpr.createBounded(LiteralExpr.java:214)
    at org.apache.impala.rewrite.FoldConstantsRule.apply(FoldConstantsRule.java:68)
    at org.apache.impala.rewrite.ExprRewriter.applyRuleBottomUp(ExprRewriter.java:85)
    at org.apache.impala.rewrite.ExprRewriter.applyRuleRepeatedly(ExprRewriter.java:71)
    at org.apache.impala.rewrite.ExprRewriter.rewrite(ExprRewriter.java:55)
    at org.apache.impala.rewrite.SimplifyConditionalsRule.simplifyCaseExpr(SimplifyConditionalsRule.java:240)
    at org.apache.impala.rewrite.SimplifyConditionalsRule.apply(SimplifyConditionalsRule.java:71)
    at org.apache.impala.rewrite.ExprRewriter.applyRuleBottomUp(ExprRewriter.java:85)
    at org.apache.impala.rewrite.ExprRewriter.applyRuleRepeatedly(ExprRewriter.java:71)
    at org.apache.impala.rewrite.ExprRewriter.rewrite(ExprRewriter.java:55)
    at org.apache.impala.analysis.SelectList.rewriteExprs(SelectList.java:100)
    at org.apache.impala.analysis.SelectStmt.rewriteExprs(SelectStmt.java:1517)
    at org.apache.impala.analysis.AnalysisContext.analyze(AnalysisContext.java:585)
    at org.apache.impala.analysis.AnalysisContext.analyzeAndAuthorize(AnalysisContext.java:492)
    at org.apache.impala.service.Frontend.doCreateExecRequest(Frontend.java:2397)
    at org.apache.impala.service.Frontend.getTExecRequest(Frontend.java:2144)
    at org.apache.impala.service.Frontend.createExecRequest(Frontend.java:1913)
    at org.apache.impala.service.JniFrontend.createExecRequest(JniFrontend.java:169)