[ACCUMULO-4603] ChaoticBalancerIT fails with NPE in master in balance path

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Cannot Reproduce
• Affects Version/s: 1.7.3
• Component/s: test
• Assignee: Unassigned
• Reporter: Josh Elser
• Created: 07/Mar/17 18:35
• Updated: 23/Apr/19 23:44
• Resolved: 23/Apr/19 23:44

Description

2017-03-07 12:54:39,459 [master.Master] ERROR: Error balancing tablets, will wait for 1 (seconds) and then retry
java.lang.NullPointerException
        at org.apache.accumulo.core.rpc.ThriftUtil.getClient(ThriftUtil.java:121)
        at org.apache.accumulo.server.master.balancer.TabletBalancer.getOnlineTabletsForTable(TabletBalancer.java:199)
        at org.apache.accumulo.server.master.balancer.ChaoticLoadBalancer.balance(ChaoticLoadBalancer.java:138)
        at org.apache.accumulo.server.master.balancer.TableLoadBalancer.balance(TableLoadBalancer.java:156)
        at org.apache.accumulo.master.Master$StatusThread.balanceTablets(Master.java:1015)
        at org.apache.accumulo.master.Master$StatusThread.updateStatus(Master.java:981)
        at org.apache.accumulo.master.Master$StatusThread.run(Master.java:959)

This is spewed across the Master log. Apparently something changed in the Balancer API or implementation since 1.7.1 (when I fixed this test in ACCUMULO-3356)?