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master: 89%

Ran 07 Mar 2019 09:26PM UTC

Files 259

Run time 13s

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Committed 07 Mar 2019 09:14PM UTC coverage: 87.171% (-0.03%) from 87.196%

Job # 13181.1

Build Type

push

travis-ci

Committed by

web-flow

Commit Message

grpclb: keep track of state updates for cached Subchannels. (#5441)

The problem: GrpclbState tracks Subchannels' states as a mutable
attribute in Subchannel.getAttributes(). However, GrpclbState only
update this attribute for the Subchannels its managing. For those
cached in SubchannelPool, their state attributes are stale. When they
are given back to GrpclbState, IDLE state is assumed.  As a result, if
a Subchannel is READY when it's reclaimed from the pool, it will not
be picked.

To fix that, this change expands SubchannelPool interface to handle
Subchannel state updates, which GrpclbState will call. SubchannelPool
saves the latest state and delivers it when it's returned to
GrpclbState by scheduling a call to handleSubchannelState() in the
SynchronizationContext, so that GrpclbState will take the latest state
as if it was just reported from the Channel.

Coverage Stats

14188 of 16276 relevant lines covered (87.17%)

0.87 hits per line

grpc / grpc-java / 13181 / 1
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master: 89%

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