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https://issues.apache.org/jira/browse/IGNITE-9599?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16629896#comment-16629896
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Ignite TC Bot commented on IGNITE-9599:
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{panel:title=Possible
Blockers|borderStyle=dashed|borderColor=#ccc|titleBGColor=#F7D6C1}
{color:#d04437}ZooKeeper (Discovery) 2{color} [[tests 0 TIMEOUT , Exit Code
|https://ci.ignite.apache.org/viewLog.html?buildId=1924766]]
{color:#d04437}Java Client{color} [[tests 0 TIMEOUT , Exit Code
|https://ci.ignite.apache.org/viewLog.html?buildId=1924744]]
{color:#d04437}SPI{color} [[tests
1|https://ci.ignite.apache.org/viewLog.html?buildId=1924758]]
* IgniteSpiTestSuite: TcpDiscoverySslSelfTest.testMulticastIpFinder - 0,0%
fails in last 100 master runs.
{color:#d04437}PDS (Direct IO) 2{color} [[tests
3|https://ci.ignite.apache.org/viewLog.html?buildId=1924778]]
* IgnitePdsNativeIoTestSuite2: IgnitePersistentStoreDataStructuresTest.testSet
- 0,0% fails in last 100 master runs.
{color:#d04437}PDS 2{color} [[tests
1|https://ci.ignite.apache.org/viewLog.html?buildId=1924782]]
* IgnitePdsTestSuite2: IgnitePersistentStoreDataStructuresTest.testSet - 0,0%
fails in last 100 master runs.
{panel}
[TeamCity Run
All|http://ci.ignite.apache.org/viewLog.html?buildId=1924822&buildTypeId=IgniteTests24Java8_RunAll]
> Add ability to manage compression level for compressed WAL archives
> -------------------------------------------------------------------
>
> Key: IGNITE-9599
> URL: https://issues.apache.org/jira/browse/IGNITE-9599
> Project: Ignite
> Issue Type: Improvement
> Reporter: Andrey Kalinin
> Assignee: Alexand Polyakov
> Priority: Minor
>
> In some cases, WAL compression performance is not sufficient, i.e. new
> archives accumulate faster than old ones are compressed.
> We did some tests: the file size of 1GB is compressed at the default
> compression level for 1 minute, the output file size is ~120MB.
> After that, the compression rate was tested with compression-level=-1: 1 GB
> file is compressed in 13 seconds, the output file size is ~125MB.
> (from the [zlib manual|https://www.zlib.net/manual.html#Basic]:
> The compression level must be Z_DEFAULT_COMPRESSION, or between 0 and 9: 1
> gives best speed, 9 gives best compression, 0 gives no compression at all
> (the input data is simply copied a block at a time). Z_DEFAULT_COMPRESSION
> requests a default compromise between speed and compression (currently
> equivalent to level 6).
> )
> So we need add an option to change the default compression level in the
> ignite configuration file.
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