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https://issues.apache.org/jira/browse/HBASE-15650?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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stack updated HBASE-15650:
--------------------------
Attachment: 15650.patch
Refactor so we use the immutable, unsynchronized TimeRange when doing
time-based checks at read time rather than use the heavily synchronized
TimeRangeTracker; let TimeRangeTracker be for write-time only.
While in here, changed the Segment stuff so that when an immutable
segment, it uses TimeRange rather than TimeRangeTracker too.
{code}
M hbase-common/src/main/java/org/apache/hadoop/hbase/io/TimeRange.java
Make allTime final.
Add a includesTimeRange method copied from TimeRangeTracker.
M
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/TimeRangeTracker.java
Change name of a few methods so they match TimeRange methods that do
same thing.
(getTimeRangeTracker, getTimeRange, toTimeRange) add utility methods
M
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/ImmutableSegment.java
Change ImmutableSegment so it uses a TimeRange rather than
TimeRangeTracker.. it is read-only. Redo shouldSeek, getMinTimestamp,
updateMetaInfo, and getTimeRangeTracker so we use TimeRange-based
implementations instead of TimeRangeTracker implementations.
M
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/MutableSegment.java
Implement shouldSeek, getMinTimestamp, updateMetaInfo, and
getTimeRangeTracker using TimeRangeTracker.
M hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/Segment.java
Make methods that were using TimeRangeTracker abstract and instead
have the implementations do these methods how they want either using
TimeRangeTracker when a mutable segment or TimeRange when an immutable
segment.
M hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/StoreFile.java
Change Reader to use TimeRange-based checks instead of
TimeRangeTracker.
{code}
> Remove TimeRangeTracker as point of contention when many threads reading a
> StoreFile
> ------------------------------------------------------------------------------------
>
> Key: HBASE-15650
> URL: https://issues.apache.org/jira/browse/HBASE-15650
> Project: HBase
> Issue Type: Bug
> Components: Performance
> Affects Versions: 2.0.0
> Reporter: stack
> Assignee: stack
> Fix For: 2.0.0
>
> Attachments: 15650.patch
>
>
> HBASE-12148 is about "Remove TimeRangeTracker as point of contention when
> many threads writing a Store". It is also a point of contention when reading.
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