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https://issues.apache.org/jira/browse/IMPALA-8852?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17044665#comment-17044665
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ASF subversion and git services commented on IMPALA-8852:
---------------------------------------------------------
Commit 777d0d203f138183d65885b523b619421b487714 in impala's branch
refs/heads/master from Tamas Mate
[ https://gitbox.apache.org/repos/asf?p=impala.git;h=777d0d2 ]
IMPALA-8852: Skip short-circuit config check for dedicated coordinator
ImpalaD should not abort when running as dedicated coodinator and DataNode is
not available on the host. This change adds a condition to skip the short-
circuit socket path directory checks when ImpalaD is started with
'is_executor=false' flag.
Testing:
- Added test to JniFrontendTest.java to verify the short-circuit directory
check is skipped if ImpalaD is started as dedicated coordinator mode.
- Manually tested the appearance of the warning message with:
start-impala-cluster.py --num_coordinators 1 --use_exclusive_coordinators true
Change-Id: I373d4037f4cee203322a398b77b75810ba708bb5
Reviewed-on: http://gerrit.cloudera.org:8080/15173
Reviewed-by: Impala Public Jenkins <[email protected]>
Tested-by: Impala Public Jenkins <[email protected]>
> ImpalaD fail to start on a non-datanode with "Invalid short-circuit reads
> configuration"
> ----------------------------------------------------------------------------------------
>
> Key: IMPALA-8852
> URL: https://issues.apache.org/jira/browse/IMPALA-8852
> Project: IMPALA
> Issue Type: Bug
> Components: Backend
> Affects Versions: Impala 3.2.0, Impala 3.3.0
> Reporter: Adriano
> Assignee: Tamas Mate
> Priority: Major
> Labels: ramp-up
>
> On coordinator only nodes ([typically the edge
> nodes|https://www.cloudera.com/documentation/enterprise/5-15-x/topics/impala_dedicated_coordinator.html#concept_omm_gf1_n2b]):
> {code:java}
> --is_coordinator=true
> --is_executor=false
> {code}
> the *dfs.domain.socket.path* (can be nonexistent on the local FS as the
> Datanode role eventually is not installed on the edge node).
> The non existing path prevent the ImpalaD to start with the message:
> {code:java}
> I0809 04:15:53.899714 25364 status.cc:124] Invalid short-circuit reads
> configuration:
> - Impala cannot read or execute the parent directory of
> dfs.domain.socket.path
> @ 0xb35f19
> @ 0x100e2fe
> @ 0x103f274
> @ 0x102836f
> @ 0xa9f573
> @ 0x7f97807e93d4
> @ 0xafb3b8
> E0809 04:15:53.899749 25364 impala-server.cc:278] Invalid short-circuit reads
> configuration:
> - Impala cannot read or execute the parent directory of
> dfs.domain.socket.path
> {code}
> despite a coordinator-only ImpalaD does not do short circuit reads.
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