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https://issues.apache.org/jira/browse/HBASE-27940?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17733948#comment-17733948
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Hudson commented on HBASE-27940:
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Results for branch branch-2.5
[build #370 on
builds.a.o|https://ci-hbase.apache.org/job/HBase%20Nightly/job/branch-2.5/370/]:
(/) *{color:green}+1 overall{color}*
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details (if available):
(/) {color:green}+1 general checks{color}
-- For more information [see general
report|https://ci-hbase.apache.org/job/HBase%20Nightly/job/branch-2.5/370/General_20Nightly_20Build_20Report/]
(/) {color:green}+1 jdk8 hadoop2 checks{color}
-- For more information [see jdk8 (hadoop2)
report|https://ci-hbase.apache.org/job/HBase%20Nightly/job/branch-2.5/370/JDK8_20Nightly_20Build_20Report_20_28Hadoop2_29/]
(/) {color:green}+1 jdk8 hadoop3 checks{color}
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report|https://ci-hbase.apache.org/job/HBase%20Nightly/job/branch-2.5/370/JDK8_20Nightly_20Build_20Report_20_28Hadoop3_29/]
(/) {color:green}+1 jdk11 hadoop3 checks{color}
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(/) {color:green}+1 source release artifact{color}
-- See build output for details.
(/) {color:green}+1 client integration test{color}
> Midkey metadata in root index block would always be ignored by
> BlockIndexReader.readMultiLevelIndexRoot
> -------------------------------------------------------------------------------------------------------
>
> Key: HBASE-27940
> URL: https://issues.apache.org/jira/browse/HBASE-27940
> Project: HBase
> Issue Type: Bug
> Components: HFile
> Affects Versions: 3.0.0-alpha-4, 2.4.17, 2.5.5, 4.0.0-alpha-1
> Reporter: chenglei
> Assignee: chenglei
> Priority: Major
> Fix For: 2.6.0, 2.4.18, 2.5.6, 3.0.0-beta-1
>
>
> After HBASE-27053， checksum is removed from the {{HFileBlock}} {{ByteBuff}}
> in {{FSReaderImpl.readBlockDataInternal}} once the checksum is verified, so
> {{HFileBlock.buf}} does not include checksum, but for
> {{BlockIndexReader.readMultiLevelIndexRoot}}, after read root index entries ,
> it still subtracts the checksum to check if the midkey metadat exists, the
> midkey metadata would always be ignored:
> {code:java}
> public void readMultiLevelIndexRoot(HFileBlock blk, final int numEntries)
> throws IOException {
> DataInputStream in = readRootIndex(blk, numEntries);
> // after reading the root index the checksum bytes have to
> // be subtracted to know if the mid key exists.
> int checkSumBytes = blk.totalChecksumBytes();
> if ((in.available() - checkSumBytes) < MID_KEY_METADATA_SIZE) {
> // No mid-key metadata available.
> return;
> }
> midLeafBlockOffset = in.readLong();
> midLeafBlockOnDiskSize = in.readInt();
> midKeyEntry = in.readInt();
> }
> {code}
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