JQL search with large number of characters cannot be exported

Issue Summary

When a JIRA user performs a search in JIRA that uses the IN condition (e.g. Key in (.....)) if the options is very large (200+), JIRA would do one of the following depending on the browser and JIRA Version when they attempt to perform an Export:

Update

This behavior is not limited to the IN operator. Performing any search in JIRA with about 3k characters in the JQL, we were able to reproduce the issue of the export failing with slightly different observations

This doesn't seem to work irrespective of the export choice.

Steps to Reproduct

1. Go to the search issue page in JIRA.
2. Perform an advanced search with the following option

   key in ("JRA-62001", "JRA-62002", "JRA-62003", "JRA-62004", "JRA-62005", "JRA-62006", "JRA-62007", "JRA-62008", "JRA-62009", "JRA-62010", "JRA-62011", "JRA-62012", "JRA-62013", "JRA-62014", "JRA-62015", "JRA-62016", "JRA-62017", "JRA-62018", "JRA-62019", "JRA-62020", "JRA-62021", "JRA-62022", "JRA-62023", "JRA-62024", "JRA-62025", "JRA-62026", "JRA-62027", "JRA-62028", "JRA-62029", "JRA-62030", "JRA-62031", "JRA-6202", "JRA-6203", "JRA-6204", "JRA-6205", "JRA-6206", "JRA-6207", "JRA-6208", "JRA-6209", "JRA-62010", "JRA-62011", "JRA-62012", "JRA-62013", "JRA-62014", "JRA-62015", "JRA-62016", "JRA-62017", "JRA-62018", "JRA-62019", "JRA-62020", "JRA-62021", "JRA-22", "JRA-23", "JRA-24", "JRA-25", "JRA-26", "JRA-27", "JRA-28", "JRA-29", "JRA-30", "JRA-31", "JRA-32", "JRA-33", "JRA-34", "JRA-35", "JRA-36", "JRA-37", "JRA-38", "JRA-39", "JRA-40", "JRA-41", "JRA-42", "JRA-43", "JRA-44", "JRA-45", "JRA-46", "JRA-47", "JRA-48", "JRA-49", "JRA-50", "JRA-51", "JRA-52", "JRA-53", "JRA-54", "JRA-55", "JRA-56", "JRA-57", "JRA-58", "JRA-59", "JRA-60", "JRA-61", "JRA-62", "JRA-63", "JRA-64", "JRA-65", "JRA-66", "JRA-67", "JRA-68", "JRA-69", "JRA-70", "JRA-71", "JRA-72", "JRA-73", "JRA-74", "JRA-75", "JRA-76", "JRA-77", "JRA-78", "JRA-79", "JRA-80", "JRA-81", "JRA-62195", "JRA-62196", "JRA-62197", "JRA-62198", "JRA-62199", "JRA-62200", "JRA-62201", "JRA-62202", "JRA-62203", "JRA-62204", "JRA-62205", "JRA-62206", "JRA-62207", "JRA-62208", "JRA-62209", "JRA-62210", "JRA-62211", "JRA-62212", "JRA-62213", "JRA-62214", "JRA-62215", "JRA-62216", "JRA-62217", "JRA-62218", "JRA-62219", "JRA-62220", "JRA-62221", "JRA-62222", "JRA-62223", "JRA-62224", "JRA-62225", "JRA-62226", "JRA-62227", "JRA-62228", "JRA-62229", "JRA-62230", "JRA-62231", "JRA-62232", "JRA-62233", "JRA-62234", "JRA-62235", "JRA-62236", "JRA-62237", "JRA-62238", "JRA-62239", "JRA-62240", "JRA-241") and status not in (closed)
   
   or something like:
   
   key = ssp-1 or key = ssp-2 or key = ssp-3 or key = ssp-4 or key = ssp-5 or key = ssp-6 or key = ssp-7 or key = ssp-8 or key = ssp-9 or key = ssp-11 or key = ssp-12 or key = ssp-13 or key = ssp-14 or key = ssp-15 or key = ssp-16 or key = ssp-17 or key = ssp-18 or key = ssp-19 or key = ssp-21 or key = ssp-22 or key = ssp-23 or key = ssp-24 or key = ssp-25 or key = ssp-26 or key = ssp-27 or key = ssp-28 or key = ssp-29 or key = witi-1 or key = witi-2 or key = witi-3 or key = witi-4 or key = witi-5 or key = witi-6 or key = witi-7 or key = witi-8 or key = witi-9 or key = witi-1 or key = witi-2 or key = witi-3 or key = witi-4 or key = witi-5 or key = witi-6 or key = witi-7 or key = witi-8 or key = witi-9 or key = witi-11 or key = witi-12 or key = witi-13 or key = witi-14 or key = witi-15 or key = witi-16 or key = witi-17 or key = witi-18 or key = witi-19 or key = witi-21 or key = witi-22 or key = witi-23 or key = witi-24 or key = witi-25 or key = witi-26 or key = witi-27 or key = witi-28 or key = witi-29 or key = witi-31 or key = witi-32 or key = witi-33 or key = witi-34 or key = witi-35 or key = witi-36 or key = witi-37 or key = witi-38 or key = witi-39 or key = witi-41 or key = witi-42 or key = witi-43 or key = witi-44 or key = witi-45 or key = witi-46 or key = witi-47 or key = witi-48 or key = witi-49 or key = witi-51 or key = witi-52 or key = witi-53 or key = witi-54 or key = witi-55 or key = witi-56 or key = witi-57 or key = witi-58 or key = witi-59 or key = bile-1 or key = bile-2 or key = bile-3 or key = bile-4 or key = bile-5 or key = bile-6 or key = bile-7 or key = bile-8 or key = bile-9 or key = bile-11 or key = bile-12 or key = bile-13 or key = bile-14 or key = bile-15 or key = bile-16 or key = bile-17 or key = bile-18 or key = bile-19 or key = bile-21 or key = bile-22 or key = bile-23 or key = bile-24 or key = bile-25 or key = bile-26 or key = bile-27 or key = bile-28 or key = bile-29 or key = bile-31 or key = bile-32 or key = bile-33 or key = bile-34 or key = bile-35 or key = bile-36 or key = bile-37 or key = bile-38 or key = bile-39 or key = bile-41 or key = bile-42 or key = bile-43 or key = bile-44 or key = bile-45 or key = bile-46 or key = bile-47 or key = bile-48 or key = bile-49 or key = bile-51 or key = bile-52 or key = bile-53 or key = bile-54 or key = bile-55 or key = bile-56 or key = bile-57 or key = bile-58 or key = bile-59 or key = tyli-1 or key = tyli-2 or key = tyli-3 or key = tyli-4 or key = tyli-5 or key = tyli-6 or key = tyli-7 or key = tyli-8 or key = tyli-9 or key = tyli-11 or key = tyli-12 or key = tyli-13 or key = tyli-14 or key = tyli-15 or key = tyli-16 or key = tyli-17 or key = tyli-18 or key = tyli-19 or key = tyli-21 or key = tyli-22 or key = tyli-23 or key = tyli-24 or key = tyli-25 or key = tyli-26 or key = tyli-27 or key = tyli-28 or key = tyli-29 or key = tyli-31 or key = tyli-32 or key = tyli-33 or key = tyli-34 or key = tyli-35 or key = tyli-36 or key = bile-37 or key = tyli-38 or key = tyli-39 or key = tyli-41 or key = tyli-42 or key = tyli-43 or key = tyli-44 or key = tyli-45 or key = tyli-46 or key = tyli-47 or key = tyli-48 or key = tyli-49 or key = tyli-51 or key = tyli-52 or key = tyli-53 or key = bile-54 or key = tyli-55 or key = tyli-56 or key = tyli-57 or key = tyli-58 or key = tyli-59 or key = vgrs-1 or key = vgrs-2 or key = vgrs-3 or key = vgrs-4 or key = vgrs-5 or key = vgrs-6 or key = vgrs-7 or key = vgrs-8 or key = vgrs-9 or key = vgrs-11 or key = vgrs-12 or key = vgrs-13 or key = vgrs-14 or key = vgrs-15 or key = vgrs-16 or key = vgrs-17 or key = vgrs-18 or key = vgrs-19 or key = vgrs-21 or key = vgrs-22 or key = vgrs-23 or key = vgrs-24 or key = vgrs-25 or key = vgrs-26 or key = vgrs-27 or key = vgrs-28 or key = vgrs-29 or key = vgrs-31 or key = vgrs-32 or key = vgrs-33 or key = vgrs-34 or key = vgrs-35 or key = vgrs-36 or key = vgrs-37 or key = vgrs-38 or key = vgrs-39 or key = vgrs-41 or key = vgrs-42 or key = vgrs-43 or key = vgrs-44 or key = vgrs-45 or key = vgrs-46 or key = vgrs-47 or key = vgrs-48 or key = vgrs-49 or key = vgrs-51 or key = vgrs-52 or key = vgrs-53 or key = vgrs-54 or key = vgrs-55 or key = vgrs-56 or key = vgrs-57 or key = vgrs-58 or key = vgrs-59
   

3. JIRA should show you the expected result.
4. Attempt to perform an export of the result.

Expected Behavior

JIRA would export the issue correctly with no problem what so ever.

Actual Result

JIRA would throw one of the errors I mentioned above or throw the 400 bad page exception.

Further Test & Workaround

If you reduce the options in the in condition(refine the search) or the amount of characters in the JQL (2595 has been confirmed to work by our customer)JIRA would be able to export the result correctly.

The issue does not occur in JIRA 6.2 hence this seems like a regression.