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https://issues.apache.org/jira/browse/HBASE-21492?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16731568#comment-16731568
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Hudson commented on HBASE-21492:
--------------------------------
Results for branch branch-1
[build #614 on
builds.a.o|https://builds.apache.org/job/HBase%20Nightly/job/branch-1/614/]:
(x) *{color:red}-1 overall{color}*
----
details (if available):
(x) {color:red}-1 general checks{color}
-- For more information [see general
report|https://builds.apache.org/job/HBase%20Nightly/job/branch-1/614//General_Nightly_Build_Report/]
(x) {color:red}-1 jdk7 checks{color}
-- For more information [see jdk7
report|https://builds.apache.org/job/HBase%20Nightly/job/branch-1/614//JDK7_Nightly_Build_Report/]
(x) {color:red}-1 jdk8 hadoop2 checks{color}
-- For more information [see jdk8 (hadoop2)
report|https://builds.apache.org/job/HBase%20Nightly/job/branch-1/614//JDK8_Nightly_Build_Report_(Hadoop2)/]
(x) {color:red}-1 source release artifact{color}
-- See build output for details.
> CellCodec Written To WAL Before It's Verified
> ---------------------------------------------
>
> Key: HBASE-21492
> URL: https://issues.apache.org/jira/browse/HBASE-21492
> Project: HBase
> Issue Type: Bug
> Components: wal
> Affects Versions: 1.2.7, 2.0.2
> Reporter: BELUGA BEHR
> Assignee: BELUGA BEHR
> Priority: Critical
> Fix For: 3.0.0, 1.5.0, 2.2.0, 2.1.2, 2.0.4, 1.4.10
>
> Attachments: HBASE-21492-branch-1.patch, HBASE-21492.1.patch,
> HBASE-21492.2.patch, HBASE-21492.2.patch
>
>
> The cell codec class name is written into the WAL file, but the cell codec
> class is not actually verified to exist. Therefore, users can inadvertently
> configure an invalid class name and it will be recorded into the WAL file.
> At that point, the WAL file becomes unreadable and blocks processing of all
> other WAL files.
> {code:java|title=AbstractProtobufLogWriter.java}
> private WALHeader buildWALHeader0(Configuration conf, WALHeader.Builder
> builder) {
> if (!builder.hasWriterClsName()) {
> builder.setWriterClsName(getWriterClassName());
> }
> if (!builder.hasCellCodecClsName()) {
> builder.setCellCodecClsName(WALCellCodec.getWALCellCodecClass(conf));
> }
> return builder.build();
> }
> {code}
> https://github.com/apache/hbase/blob/025ddce868eb06b4072b5152c5ffae5a01e7ae30/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/wal/AbstractProtobufLogWriter.java#L78-L86
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