[STORM-1928] ShellSpout should check heartbeat while ShellSpout is waiting for subprocess to sync

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Fix Version/s: 2.0.0, 0.10.2, 1.0.2, 1.1.0, 0.9.7
• Component/s: storm-multilang
• Epic Link: Release Apache Storm 1.0.2
• Assignee: Jungtaek Lim
• Reporter: Jungtaek Lim
• Created: 23/Jun/16 14:49
• Updated: 28/Dec/17 04:37
• Resolved: 14/Jul/16 09:49

Description

It affects Storm releases which are greater than 0.9.3 so I didn't set affect version/s. All version lines are affected.

When nextTuple is not calling at any chances (max spout pending, backpressure introduced at 1.0.0, and so on) multi-lang spout don't receive any message from ShellSpout, thus no messages from multi-lang spout side. (because multilang spout and ShellSpout communicates like ping-pong, unlike multilang bolt and ShellBolt)
In result, no heartbeat is being marked, and finally raises subprocess heartbeat timeout.

Issue Links

• links to: GitHub Pull Request #1526